0

Full Content is available to subscribers

Subscribe/Learn More  >

Second-Order Viscous/Heat Fluxes Scheme: Hyperbolic System for RANS Flow and Conjugate Heat Transfer Problem in Gas Turbine

[+] Author Affiliations
Qinxue Tan, Jia Li, Jing Ren, Hongde Jiang

Tsinghua University, Beijing, China

Paper No. GT2015-42973, pp. V05AT10A014; 14 pages
doi:10.1115/GT2015-42973
From:
  • ASME Turbo Expo 2015: Turbine Technical Conference and Exposition
  • Volume 5A: Heat Transfer
  • Montreal, Quebec, Canada, June 15–19, 2015
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-5671-0
  • Copyright © 2015 by ASME

abstract

Accurate and robust scheme of diffusive flux is critical for the numerical simulations of turbulence flow and CHT problem. In this work, a general framework of constructing upwind diffusive flux scheme is investigated based on the first order hyperbolic system. The governing equations of RANS flow and CHT problem are discretized as a unified hyperbolic Convection-Diffusion system and Navier-Stokes system. One approximation approach, assuming the numerical fluxes of equations solution gradients are independent on the fluids’ compressibility, is proposed to simplify the calculation of diffusive flux for the Hyperbolic Navier-Stokes system, and the numerical accuracy is tested by several verification cases. To stabilize the computations, Lr=O(h) is suggested, and the upwind diffusive fluxes are applied to the RANS flow and CHT problem successfully. Moreover, the accuracy analysis and the convergence feature of hyperbolic CHT system are carried on. Preliminary results show that hyperbolic CHT system has a potential to simulate the distribution of temperature on the fluid-solid interface more accurately, and has some superiority to speed up the convergence.

Copyright © 2015 by ASME

Figures

Tables

Interactive Graphics

Video

Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

NOTE:
Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In