@misc{AdamGottschald2019, author = {Adam, Mario and Gottschald, Jonas}, title = {Kempen wird zum Reallabor}, series = {Stadt + Werk: Energiepolitik, Klimaschutz, Rekommunalisierung}, volume = {9}, journal = {Stadt + Werk: Energiepolitik, Klimaschutz, Rekommunalisierung}, number = {7/8}, publisher = {K21 Media AG}, issn = {2193-195X}, pages = {22 -- 23}, year = {2019}, language = {de} } @inproceedings{AdamGottschaldReichetal.2019, author = {Adam, Mario and Gottschald, Jonas and Reich, Marius and G{\"o}tzelmann, Dennis}, title = {BestHeatNet - Selbstlernende Betriebsoptimierung einer hybriden Nahw{\"a}rmeversorgung}, series = {Der Geothermiekongress, 19.-21.11.2019, M{\"u}nchen}, booktitle = {Der Geothermiekongress, 19.-21.11.2019, M{\"u}nchen}, address = {M{\"u}nchen}, year = {2019}, language = {de} } @incollection{ArdeleanBaidocOnigaNiemannetal.2019, author = {Ardelean-Baidoc, Raluca and Oniga, Gabriel and Niemann, J{\"o}rg and Sava, Adriana and P{\^i}slă, Adrian and (Keine Angabe),}, title = {Change Management Aspects in Developing the International Airport "Avram Iancu" Cluj}, series = {The proceedings of the 14th European Conference on Innovation and Entrepreneurship, 19-20 September 2019}, booktitle = {The proceedings of the 14th European Conference on Innovation and Entrepreneurship, 19-20 September 2019}, publisher = {ACPI}, isbn = {9781912764358}, doi = {10.34190/ECIE.19.092}, pages = {10}, year = {2019}, language = {en} } @article{BaierNeef2019, author = {Baier, Andr{\´e} and Neef, Matthias}, title = {Studierende lehren und lernen sozial-{\"o}kologische Verantwortung}, series = {Die Neue Hochschule}, volume = {60}, journal = {Die Neue Hochschule}, number = {5}, organization = {Hochschullehrerbund - Bundesvereinigung - e.V. (hlb)}, pages = {8 -- 11}, year = {2019}, language = {de} } @inproceedings{BeckerLippelZielke2019, author = {Becker, Martin and Lippel, Jens and Zielke, Thomas}, title = {Gradient Descent Analysis: On Visualizing the Training of Deep Neural Networks}, series = {VISIGRAPP 2019: Proceedings of the 14th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications : Prague, Czech Republic, February 25-27, 2019}, volume = {Volume: 3}, booktitle = {VISIGRAPP 2019: Proceedings of the 14th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications : Prague, Czech Republic, February 25-27, 2019}, publisher = {INSTICC}, isbn = {978-989-758-354-4}, doi = {10.5220/0007583403380345}, pages = {338 -- 345}, year = {2019}, language = {en} } @inproceedings{BeckersPawlikKieletal.2019, author = {Beckers, Sebastian and Pawlik, Julian and Kiel, J{\"u}rgen and Grote, Wolfgang}, title = {Simulation von Partikelflugbahnen zur Auslegungshilfe von elektrostatischen Luftfiltern}, publisher = {ARGESIM, ASIM}, address = {Wien}, isbn = {978-3-901608-06-3}, doi = {10.11128/arep.57}, pages = {147 -- 152}, year = {2019}, language = {de} } @article{BenimPfeiffelmannOcłońetal.2019, author = {Benim, Ali Cemal and Pfeiffelmann, Bj{\"o}rn and Ocłoń, Paweł and Taler, Jan}, title = {Computational investigation of a lifted hydrogen flame with LES and FGM}, series = {Energy}, volume = {173}, journal = {Energy}, publisher = {Elsevier}, issn = {0360-5442}, doi = {10.1016/j.energy.2019.02.133}, pages = {1172 -- 1181}, year = {2019}, language = {en} } @article{BhattacharyyaBenimChattopadhyayetal.2019, author = {Bhattacharyya, Suvanjan and Benim, Ali Cemal and Chattopadhyay, Himadri and Banerjee, Arnab}, title = {Experimental investigation of heat transfer performance of corrugated tube with spring tape inserts}, series = {Experimental Heat Transfer}, volume = {32}, journal = {Experimental Heat Transfer}, number = {5}, publisher = {Taylor \& Francis}, issn = {0891-6152}, doi = {10.1080/08916152.2018.1531955}, pages = {411 -- 425}, year = {2019}, language = {en} } @article{BhattacharyyaChattopadhyayGuinetal.2019, author = {Bhattacharyya, Suvanjan and Chattopadhyay, Himadri and Guin, Anindya and Benim, Ali Cemal}, title = {Investigation of Inclined Turbulators for Heat Transfer Enhancement in a Solar Air Heater}, series = {Heat Transfer Engineering}, volume = {40}, journal = {Heat Transfer Engineering}, number = {17/18}, publisher = {Taylor \& Francis}, doi = {10.1080/01457632.2018.1474593}, pages = {1451 -- 1460}, year = {2019}, language = {en} } @article{BhattacharyyaGobindaDasChattopadhyayetal.2019, author = {Bhattacharyya, Suvanjan and Gobinda Das, Sampad and Chattopadhyay, Himadri and Benim, Ali Cemal and Moghimi, M. A.}, title = {Transport Phenomenon of Simultaneously Developing Flow and Heat Transfer in Twisted Sinusoidal Wavy Microchannel under Pulsating Inlet Flow Condition}, series = {E3S Web of Conferences}, volume = {128}, journal = {E3S Web of Conferences}, publisher = {edp sciences}, doi = {10.1051/e3sconf/201912801011}, year = {2019}, language = {en} } @phdthesis{Biedermann2019, author = {Biedermann, Till M.}, title = {Aeroacoustic transfer of leading edge serrations from single aerofoils to low-pressure fan applications}, publisher = {Technische Universit{\"a}t Berlin}, address = {Berlin}, organization = {Technische Univerit{\"a}t Berlin}, doi = {10.14279/depositonce-9075}, school = {Hochschule D{\"u}sseldorf}, pages = {221}, year = {2019}, abstract = {Leading edge serrations are well-known for their aeroacoustic potential in reducing aerofoil-turbulence interaction noise and are also associated with certain aerodynamic advantages. To prepare leading edge serrations for industrial application, two obstacles remain to be addressed. First is a combined analysis of the aeroacoustic and the aerodynamic performance of leading edge serrations to develop optimum designs. Second is the need to examine the transferability of the known effects of leading edge serrations from a single aerofoil to full rotors, which are considered to be the final area of application. This thesis aims to assist in the transfer of a well-investigated aerofoil with serrated leading edges from the rigid to the rotating domain. With this purpose, a single aerofoil type is selected and thoroughly analysed, experimentally and numerically, to generate a reliable data basis for aerodynamic performance and noise reduction capability. Aside from gathering information on the overall performance, the spatial distribution of the noise sources is localised, and the spectral composition of the noise reduction is found to follow a clearly defined scaling law. Aerodynamically, generated vortices are found to be responsible for a complex three-dimensional separation mechanism of the leading edge serrations, causing a delay of stall. The generated data basis is then used to design low-pressure axial fans of minimum complexity by keeping the initially chosen aerofoil type. The experimentally identified noise reduction mechanisms for the serrated axial fans are found to be more diverse than the single aerofoil and highly dependent on the inflow conditions and the operation point of the fan. A highly similar pattern for the spectral scaling of the noise reduction supports the finding that at optimum operation conditions, the previously identified noise reduction mechanisms for the single aerofoils are transferable to the rotating domain. On the other hand, additional aerodynamic mechanisms are found to dominate the noise reduction for the instability region of the fan, also contributing to reduced blade-to-blade interaction effects. Moreover, the blade-tip leakage flow is altered by delaying the development of coherent structures. The next step towards a more general description of the aeroacoustic and aerodynamic dependencies is developing a comprehensive model based on artificial neural networks. This model allows a combined analysis of the aerodynamic and acoustic performance of rotors with serrated leading edges and shows an accurate prediction of the overall performance and the spectral composition of the radiated noise. It also enables the development of multi-objective optima for serration designs and motivates further studies into the generalisability of the observed trends. Furthermore, the developed model represents a feasible tool to create tailored serration designs for maximum efficiency in both aeroacoustics and aerodynamics, contributing to the development of future low-noise fans and rotating machinery.}, language = {en} } @article{BiedermannCzeckayGeyeretal.2019, author = {Biedermann, Till M. and Czeckay, Pasquale and Geyer, Thomas F. and Kameier, Frank and Paschereit, Christian O.}, title = {Effect of Inflow Conditions on the Noise Reduction Through Leading Edge Serrations}, series = {AIAA Journal}, volume = {57}, journal = {AIAA Journal}, number = {9}, publisher = {ARC}, issn = {1533-385X}, doi = {10.2514/1.j057831}, pages = {4104 -- 4109}, year = {2019}, language = {en} } @article{BiedermannKameierPaschereit2019, author = {Biedermann, Till M. and Kameier, F. and Paschereit, C. O.}, title = {Successive Aeroacoustic Transfer of Leading Edge Serrations From Single Airfoil to Low-Pressure Fan Application}, series = {Journal of Engineering for Gas Turbines and Power}, volume = {141}, journal = {Journal of Engineering for Gas Turbines and Power}, number = {10}, publisher = {ASME}, doi = {10.1115/1.4044362}, year = {2019}, language = {en} } @article{BiedermannReichKameieretal.2019, author = {Biedermann, Till M. and Reich, Marius and Kameier, Frank and Adam, Mario}, title = {Assessment of statistical sampling methods and approximation models applied to aeroacoustic and vibroacoustic problems}, series = {Advances in Aircraft and Spacecraft Science}, volume = {6}, journal = {Advances in Aircraft and Spacecraft Science}, number = {6}, publisher = {Techno Press}, issn = {2287-528X}, doi = {10.12989/aas.2019.6.6.531}, pages = {529 -- 550}, year = {2019}, language = {en} } @article{Deckert2019, author = {Deckert, Carsten}, title = {Spannungsfelder der Teamkreativit{\"a}t: Wie Teamklima und -kontext zur Kreativit{\"a}t beitragen}, series = {Ideen und Innovationsmanagement}, journal = {Ideen und Innovationsmanagement}, number = {4}, issn = {2198-3143}, pages = {116 -- 120}, year = {2019}, abstract = {Dieser Beitrag untersucht die Spannungsfelder der Teamkreativit{\"a}t. Die Spannungsfelder basieren auf einer grundlegenden Spannung aus Originalit{\"a}t und Effektivit{\"a}t, die der Standarddefinition der Kreativit{\"a}t zugrunde liegt. Es lassen sich auf Basis des Teamklimas und -kontextes Spannungsfelder hinsichtlich Konformit{\"a}t, Konsens und Koh{\"a}sion identifizieren. Mit Bezug zur Konformit{\"a}t m{\"u}ssen Teams ein positives Spannungsfeld aus der Unterst{\"u}tzung f{\"u}r Innovation und Aufgabenorientierung erreichen, um gleichzeitig Experimentierfreude zu f{\"o}rdern und hohe Qualit{\"a}tsanspr{\"u}che zu erzielen. Konsens entsteht im Spannungsfeld aus konstruktivem Konflikt und partizipatorischer Entscheidungsfindung. Bei der Koh{\"a}sion besteht eine Spannung zwischen der Teamidentit{\"a}t (Geborgenheit) und den individuellen Identit{\"a}ten der Teammitglieder (Diversit{\"a}t). Der Beitrag beschreibt, wie diese drei Spannungsfelder zusammenarbeiten, wenn außergew{\"o}hnliche Kreativit{\"a}t in Teams entsteht.}, subject = {Teamwork}, language = {de} } @article{DeckertGoers2019, author = {Deckert, Carsten and G{\"o}rs, Nadine}, title = {Transport carbon footprint in the german courier, express and parcel industry (CEP industry)}, series = {Sustainability Management Forum | NachhaltigkeitsManagementForum}, volume = {27}, journal = {Sustainability Management Forum | NachhaltigkeitsManagementForum}, number = {1}, publisher = {Springer}, doi = {10.1007/s00550-018-0471-1}, pages = {23 -- 30}, year = {2019}, language = {en} } @article{DeckertSchomaker2019, author = {Deckert, Carsten and Schomaker, Rahel M.}, title = {Kultur und Innovation - Wie sich kulturelle Faktoren auf die nationale Innovationsf{\"a}higkeit auswirken}, series = {Der Betriebswirt}, volume = {60}, journal = {Der Betriebswirt}, number = {2}, publisher = {Duncker \& Humblot}, issn = {2628-7846}, doi = {10.3790/dbw.60.2.18}, pages = {18 -- 23}, year = {2019}, language = {de} } @article{DeckertSchomaker2019, author = {Deckert, Carsten and Schomaker, Rahel M.}, title = {Cultural Impacts on National Innovativeness: Not Every Cultural Dimension Is Equal}, series = {Cross-Cultural Research}, volume = {53}, journal = {Cross-Cultural Research}, number = {2}, publisher = {sage journals}, doi = {10.1177/1069397118799700}, pages = {186 -- 214}, year = {2019}, language = {en} } @article{GirodBreitkreuzHenningetal.2019, author = {Girod, Kai and Breitkreuz, Klaas and Henning, Torsten and Lohmann, Heiko and Kaluza, Stefan and Schluter, Stefan}, title = {Steel Mills as Syngas Source for Methanol Synthesis: Simulation and Practical Performance Investigations}, series = {Chemical Engineering Transactions}, volume = {74}, journal = {Chemical Engineering Transactions}, publisher = {AIDIC}, isbn = {978-88-95608-71-6}, issn = {2283-9216}, doi = {10.3303/CET1974080}, pages = {475 -- 480}, year = {2019}, abstract = {In the present contribution, the utilization of steel-mill gases for an industrial methanol synthesis process is described. The focus of this work is on the influence of syngas compositions derived from steel-mill gases on an industrial Cu/ZnO/Al2O3 catalyst. Elevated CO2 and H2O concentrations seem to have an irreversible impact on the activity of the catalyst. In order to obtain realistic gas composition for the catalyst tests, a process simulation of the methanol synthesis was conducted. The calculated gas compositions at the reactor inlet were applied in a practical test in order to evaluate the catalyst stability under steel mill gas conditions. No noticeable deactivation was observed.}, language = {en} } @article{GuoDoRuess2019, author = {Guo, Y. and Do, H. and Ruess, Martin}, title = {Isogeometric stability analysis of thin shells: From simple geometries to engineering models}, series = {International Journal for Numerical Methods in Engineering}, volume = {118}, journal = {International Journal for Numerical Methods in Engineering}, number = {8}, publisher = {Wiley}, issn = {1097-0207}, doi = {10.1002/nme.6020}, pages = {433 -- 458}, year = {2019}, language = {en} } @article{KretschmarNiemannDeckert2019, author = {Kretschmar, Dominik and Niemann, J{\"o}rg and Deckert, Carsten}, title = {Digitalisierungsindex zur prozessnahen Analyse mittelst{\"a}ndischer Unternehmen}, series = {ZWF Zeitschrift f{\"u}r wirtschaftlichen Fabrikbetrieb}, volume = {114}, journal = {ZWF Zeitschrift f{\"u}r wirtschaftlichen Fabrikbetrieb}, number = {4}, publisher = {Hanser}, issn = {0947-0085}, doi = {10.3139/104.112064}, pages = {213 -- 218}, year = {2019}, language = {de} } @inproceedings{LauxGotterNeef2019, author = {Laux, Christoph and Gotter, Andreas and Neef, Matthias}, title = {Experimental investigation of a low pressure steam Rankine cycle for waste heat utilization of internal combustion engines}, series = {Proceedings of the 5th International Seminar on ORC Power Systems}, booktitle = {Proceedings of the 5th International Seminar on ORC Power Systems}, publisher = {The National Technical University of Athens (NTUA)}, address = {Athens}, isbn = {978-90-9032038-0}, year = {2019}, abstract = {High heat losses via exhaust gas and coolant in internal combustion engines (ICE) are the basis for numerous investigations regarding downstream processes for power generation. The most promising concepts are Organic Rankine Cycles (ORC) and Steam Rankine Cycles (SRC). In previous work of the Center of Innovative Energy Systems, D{\"u}sseldorf (Germany), the technical and economic feasibility of a low pressure SRC has been investigated and the advantages in comparison to organic Rankine cycles are highlighted. A distinctive feature of the cycle is the use of the ICE coolant heat for evaporation, which limits the cycles maximum steam pressure to values below atmospheric pressure. This work presents first results of a test rig with data reconciliation according to DIN 2048 to validate the simulation results and design calculations. As a basis for the experimental investigations, a gas fired CHP plant was selected. The design of the test rig is optimized for the operation in the laboratory, where the coolant heat is emulated by a tempering device and the exhaust heat of the CHP plant is emulated by a gas burner. With the designed test rig, it is possible to control the volume flow and the temperatures of the coolant and exhaust gas, so that different load conditions of the gas fired CHP plant can be investigated. For initial tests, the turbine in the SRC is replaced by a throttle to achieve the pressure drop of the turbine. The experimental results show, that the exhaust and coolant heat of a 36 kWel CHP plant can be emulated and the performance expectations of the cycle can be met in stable steady-state conditions. Based on the measurement results and the turbine design calculations an electric power output of the cycle of 3.8 kW will be possible, which results in a cycle efficiency of about 6.5 \% and an increase of the electrical power output of the CHP plant of about 10 \%. The results show that the plant concept is technically feasible and, with further optimization, also represents an alternative to ORC plants in terms of increasing the efficiency of a cogeneration plant.}, language = {en} } @inproceedings{LippelBeckerZielke2019, author = {Lippel, Jens and Becker, Martin and Zielke, Thomas}, title = {Modeling Dynamic Processes with Deep Neural Networks: A Case Study with a Gas-fired Absorption Heat Pump}, series = {SIMULTECH 2019: Proceedings of the 9th International Conference on Simulation and Modeling Methodologies, Technologies and Applications : Prague, Czech RepublicJuly 29-31, 2019}, booktitle = {SIMULTECH 2019: Proceedings of the 9th International Conference on Simulation and Modeling Methodologies, Technologies and Applications : Prague, Czech RepublicJuly 29-31, 2019}, editor = {Obaidat, Mohammad S. and {\"O}ren, Tuncer and Szczerbicka, Helena}, publisher = {INSTICC}, isbn = {978-989-758-381-0}, doi = {10.5220/0007932903170326}, pages = {317 -- 326}, year = {2019}, language = {en} } @article{NebelSchmidtPanetal.2019, author = {Nebel, Janine and Schmidt, Stefan and Pan, Qiushi and Lotz, Katrin and Kaluza, Stefan and Muhler, Martin}, title = {On the role of cobalt carbidization in higher alcohol synthesis over hydrotalcite-based Co-Cu catalysts}, series = {Chinese Journal of Catalysis}, volume = {40}, journal = {Chinese Journal of Catalysis}, number = {11}, publisher = {Elsevier}, issn = {1872-2067}, doi = {10.1016/S1872-2067(19)63344-9}, pages = {1731 -- 1740}, year = {2019}, language = {en} } @inproceedings{NeefAndre2019, author = {Neef, Matthias and Andr{\´e}, Baier}, title = {Blue Engineering: Ingenieur_innen mit {\"o}kologischer und sozialer Verantwortung - ein Studierenden-getriebenes, modulares Seminar-Konzept}, series = {DGHD-Jahrestagung}, booktitle = {DGHD-Jahrestagung}, publisher = {Universit{\"a}t Leipzig}, address = {Leipzig}, organization = {Universit{\"a}t Leipzig}, year = {2019}, language = {de} } @incollection{NiemannFusseneckerSchloesser2019, author = {Niemann, J{\"o}rg and Fussenecker, Claudia and Schl{\"o}sser, Martin}, title = {Eye Tracking for Quality Control in Automotive Manufacturing}, series = {Systems, Software and Services Process Improvement}, booktitle = {Systems, Software and Services Process Improvement}, editor = {Walker, Alastair and O'Connor, Rory V. and Messnarz, Richard}, publisher = {Springer International Publishing}, address = {Cham}, isbn = {978-3-030-28004-8}, doi = {10.1007/978-3-030-28005-5_22}, pages = {289 -- 298}, year = {2019}, language = {en} } @article{PfeiffelmannBenimJoos2019, author = {Pfeiffelmann, Bj{\"o}rn and Benim, Ali Cemal and Joos, Franz}, title = {A Finite Volume Analysis of Thermoelectric Generators}, series = {Heat Transfer Engineering}, volume = {40}, journal = {Heat Transfer Engineering}, number = {17-18}, publisher = {Taylor \& Francis}, issn = {0145-7632}, doi = {10.1080/01457632.2018.1474588}, pages = {1442 -- 1450}, year = {2019}, language = {en} } @inproceedings{RoedderSpiegelFranketal.2019, author = {R{\"o}dder, Maximilian and Spiegel, Thomas and Frank, Lena and Neef, Matthias and Adam, Mario}, title = {Integration eines multifunktionalen W{\"a}rmepumpensystems als Hardware-in-the-Loop in ein Niederspannungsnetzmodell}, series = {Smart Energy and Systems 2019: Digitalisierung - Anwendungen in Technik und Industriegesellschaft, 10. Fachtagung, 04.-05.11.2019, Dortmund}, booktitle = {Smart Energy and Systems 2019: Digitalisierung - Anwendungen in Technik und Industriegesellschaft, 10. Fachtagung, 04.-05.11.2019, Dortmund}, editor = {Großmann, Uwe and Kunold, Ingo}, publisher = {vwh Verlag Werner H{\"u}lsbusch Fachverlag f{\"u}r Medientechnik und -wirtschaft}, address = {Gl{\"u}ckstadt}, pages = {70 -- 77}, year = {2019}, language = {de} } @inproceedings{SchrammKrugerNiemannetal.2019, author = {Schramm, Alexander and Kruger, Karl and Niemann, J{\"o}rg and Grote, Wolfgang}, title = {Possibilities, Limitations and Considerations for Eye Tracking in Industrial Environments: Experience from a Case Study}, series = {International Conference on Competitive Manufacturing (COMA 19) proceedings : 30 January 2019-1 February 2019, Stellenbosch, South Africa}, booktitle = {International Conference on Competitive Manufacturing (COMA 19) proceedings : 30 January 2019-1 February 2019, Stellenbosch, South Africa}, editor = {Dimitrov, Dimiter and Hagedorn-Hansen, Devon and Leipzig, Karl von}, publisher = {Department of Industrial Engineering, Stellenbosch University}, address = {Stellenbosch}, isbn = {978-0-7972-1779-9}, pages = {390 -- 396}, year = {2019}, abstract = {Eye tracking is a measurement technique for determining the orientation and viewing direction of an individual's eyes. It allows for an evaluation of the individual's gaze and other related information.There is a wide variety of application areas for eye tracking, however the usage in engineeringindustry is still limited. This paper presents a case study for the use of eye tracking in a testingstation for electrical circuit breakers. The case study aims to evaluate the measurement and analysispossible with the Tobii wearable eye tracking system. From the case study, possibilities, limitationsand considerations for eye tracking in industrial settings are identified and discussed. The paperconcludes that while eye tracking can be used to effectively capture and visualize insightfulinformation, it faces major challenges related to subjectivity in analysis and labour intensiveness.}, language = {en} } @inproceedings{SpiegelAdam2019, author = {Spiegel, Thomas and Adam, Mario}, title = {Lastflexibilit{\"a}t in Wohngeb{\"a}uden f{\"u}r reale Stromnetze mit Transportbeschr{\"a}nkungen}, series = {10. Fachtagung Smart Energy and Systems, 04.-05.11.2019, Dortmund}, booktitle = {10. Fachtagung Smart Energy and Systems, 04.-05.11.2019, Dortmund}, address = {Dortmund}, year = {2019}, language = {de} } @incollection{StodickDeckert2019, author = {Stodick, Klaus and Deckert, Carsten}, title = {Sustainable Parcel Delivery in Urban Areas with Micro Depots}, series = {Mobility in a Globalised World 2018}, booktitle = {Mobility in a Globalised World 2018}, editor = {Sucky, Eric and Kolke, Reinhard and Biethahn, Niels and Werner, Jan and Vogelsang, Michael}, publisher = {University of Bamberg Press}, address = {Bamberg}, isbn = {978-3863096625}, doi = {10.20378/irbo-54827}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:473-opus4-548276}, publisher = {Hochschule D{\"u}sseldorf}, pages = {233 -- 244}, year = {2019}, language = {de} }