Skip to content Skip to navigation
University of Warwick
  • Study
  • |
  • Research
  • |
  • Business
  • |
  • Alumni
  • |
  • News
  • |
  • About

University of Warwick
Publications service & WRAP

Highlight your research

  • WRAP
    • Home
    • Search WRAP
    • Browse by Warwick Author
    • Browse WRAP by Year
    • Browse WRAP by Subject
    • Browse WRAP by Department
    • Browse WRAP by Funder
    • Browse Theses by Department
  • Publications Service
    • Home
    • Search Publications Service
    • Browse by Warwick Author
    • Browse Publications service by Year
    • Browse Publications service by Subject
    • Browse Publications service by Department
    • Browse Publications service by Funder
  • Help & Advice
University of Warwick

The Library

  • Login
  • Admin

Numerical characterization of under-expanded cryogenic hydrogen gas jets

Tools
- Tools
+ Tools

Ren, Zhaoxin and Wen, Jennifer X. (2020) Numerical characterization of under-expanded cryogenic hydrogen gas jets. AIP Advances, 10 (9). 095303. doi:10.1063/5.0020826

[img]
Preview
PDF
WRAP-Numerical-characterization-under-expanded-cryogenic-hydrogen-gas-Wen-2020.pdf - Published Version - Requires a PDF viewer.
Available under License Creative Commons Attribution 4.0.

Download (9Mb) | Preview
Official URL: http://dx.doi.org/10.1063/5.0020826

Request Changes to record.

Abstract

High-resolution direct numerical simulations are conducted for under-expanded cryogenic hydrogen gas jets to characterize the nearfield flow physics. The basic flow features and jet dynamics are analyzed in detail, revealing the existence of four stages during early jet development, namely, (a) initial penetration, (b) establishment of near-nozzle expansion, (c) formation of downstream compression, and (d) wave propagation. Complex acoustic waves are formed around the under-expanded jets. The jet expansion can also lead to conditions for local liquefaction from the pressurized cryogenic hydrogen gas release. A series of simulations are conducted with systematically varied nozzle pressure ratios and systematically changed exit diameters. The acoustic waves around the jets are found to waken with the decrease in the nozzle pressure ratio. The increase in the nozzle pressure ratio is found to accelerate hydrogen dispersion and widen the regions with hydrogen liquefaction potential. The increase in the nozzle exit diameter also widens the region with hydrogen liquefaction potential but slows down the evolution of the flow structures.

Item Type: Journal Article
Subjects: T Technology > TP Chemical technology
Divisions: Faculty of Science > Engineering
Library of Congress Subject Headings (LCSH): Hydrogen as fuel, Gases, Computational fluid dynamics
Journal or Publication Title: AIP Advances
Publisher: American Institute of Physics
ISSN: 2158-3226
Official Date: 2020
Dates:
DateEvent
2020Published
10 August 2020Accepted
Date of first compliant deposit: 3 November 2020
Volume: 10
Number: 9
Article Number: 095303
DOI: 10.1063/5.0020826
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access
Copyright Holders: © Author(s) 2020
RIOXX Funder/Project Grant:
Project/Grant IDRIOXX Funder NameFunder ID
779613[ERC] Horizon 2020 Framework Programmehttp://dx.doi.org/10.13039/100010661
51806179[NSFC] National Natural Science Foundation of Chinahttp://dx.doi.org/10.13039/501100001809
UNSPECIFIEDFundamental Research Funds for the Central Universitieshttp://dx.doi.org/10.13039/501100012226
UNSPECIFIEDBasic Research Plan of Natural Science in Shaanxi ProvinceUNSPECIFIED

Request changes or add full text files to a record

Repository staff actions (login required)

View Item View Item

Downloads

Downloads per month over past year

View more statistics

twitter

Email us: wrap@warwick.ac.uk
Contact Details
About Us