Zobrazeno 1 - 10
of 72
pro vyhledávání: '"David M. Christopher"'
Autor:
Xuefang Li, Chenyi Yao, Scott C. Egbert, Qian He, Zeying Zhao, David M. Christopher, Ethan S. Hecht
Publikováno v:
International Journal of Hydrogen Energy. 48:4104-4117
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::81f42d7bacd801aa76a788113f3570c0
https://doi.org/10.1016/j.ijhydene.2022.10.117
https://doi.org/10.1016/j.ijhydene.2022.10.117
Publikováno v:
International Journal of Hydrogen Energy. 47:686-696
Hydrogen is a promising energy carrier that will become competitive in the near future. The present study modeled hydrogen leaks and diffusion in an actual size underground parking garage with the numerical model validated by scale experimental data.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f696c97bffaa003f7845c7d0259588f9
https://doi.org/10.1016/j.ijhydene.2021.08.196
https://doi.org/10.1016/j.ijhydene.2021.08.196
Publikováno v:
International Journal of Hydrogen Energy. 46:12545-12554
Previous studies have shown that the two-layer model more accurately predicts hydrogen dispersion than the conventional notional nozzle models without significantly increasing the computational expense. However, the model was only validated for predi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1c8581ca4039e840c1bc765a876792ef
https://doi.org/10.1016/j.ijhydene.2020.08.204
https://doi.org/10.1016/j.ijhydene.2020.08.204
Autor:
Xuefang Li, Mingbin Zhao, Shui Ji, Teng Huang, David M. Christopher, Chenhui Liu, Mingjia Chen
Publikováno v:
International Journal of Hydrogen Energy. 46:1420-1433
The detection and localization of hydrogen releases are of vital importance in large confined spaces to enable safe commercial penetration of hydrogen energy into society. In the present study, a hydrogen leak localization system was developed based
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::edad9231126525006deacf209c676c4d
https://doi.org/10.1016/j.ijhydene.2020.09.218
https://doi.org/10.1016/j.ijhydene.2020.09.218
Autor:
Mingjia Chen, Mingbin Zhao, Huajian Chang, Teng Huang, David M. Christopher, Shui Ji, Lian Chen, Xuefang Li
Publikováno v:
International Journal of Hydrogen Energy. 45:22166-22175
Most previous studies of hydrogen fuel cell vehicle (HFCV) releases in garages have focused on residential garages. However, hydrogen releases in large underground parking garages can be completely different with more concerns about public safety. In
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::979601707b225ae1c45a4e7aa6a786ea
https://doi.org/10.1016/j.ijhydene.2020.05.162
https://doi.org/10.1016/j.ijhydene.2020.05.162
Publikováno v:
Heat and Mass Transfer. 56:2711-2723
Droplet formation in a flow-focusing device was modeled using the open source CFD package, OpenFOAM, with the VOF model for two-phase flow. Predictions using the interFoam solver and a power-law non-Newtonian model were first validated against experi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7a1bab4200398b4fc0f07b2a5cfe92e1
https://doi.org/10.1007/s00231-020-02899-6
https://doi.org/10.1007/s00231-020-02899-6
Publikováno v:
Experimental Thermal and Fluid Science. 104:67-75
This study focuses on analyzing the bubble dynamics during coalescence for nucleate pool boiling and its effects on the heat transfer. The study uses experimental observations and heat flux measurements to characterize the bubble dynamics, fluid flow
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d3e2407a00ce33c7b37c57f615b559bc
https://doi.org/10.1016/j.expthermflusci.2019.01.024
https://doi.org/10.1016/j.expthermflusci.2019.01.024
Publikováno v:
Progress in Nuclear Energy. 112:7-19
This paper numerically investigates bubble nucleation, growth, merger, and departure characteristics as well as the heat transfer distributions on the surface, and compared the simulation results with experimental results. Micro-heaters are utilized
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::03fa0c8836ea3de685be2f71168f9607
https://doi.org/10.1016/j.pnucene.2018.12.001
https://doi.org/10.1016/j.pnucene.2018.12.001
Autor:
David M. Christopher, Qian He, Qi Chen, Mingjia Chen, Bikram Roy Chowdhury, Xuefang Li, Xu Cheng, Ethan S. Hecht
Publikováno v:
International Journal of Hydrogen Energy. 44:6353-6365
The development and revision of safety codes and standards for hydrogen infrastructure requires a solid scientific basis, including studies of unignited releases from high pressure systems for various scenarios. Most hydrogen releases are modeled as
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::700fb68a9c8efe5868c3e548b85550e3
https://doi.org/10.1016/j.ijhydene.2019.01.079
https://doi.org/10.1016/j.ijhydene.2019.01.079
Publikováno v:
International Journal of Hydrogen Energy. 43:13649-13658
Various reduced-order models have been developed to quickly model high pressure underexpanded jets. One example is the two-layer partitioning model which was developed to model underexpanded jets, but it has not been evaluated for high pressure jets
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d62819cc3d26499dc67024194ed6ae2b
https://doi.org/10.1016/j.ijhydene.2018.05.036
https://doi.org/10.1016/j.ijhydene.2018.05.036