Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Chong M. Cha"'
Publikováno v:
Journal of the American Ceramic Society. 105:4595-4607
Autor:
Chong M. Cha
Publikováno v:
Journal of Turbomachinery. 139
The effect of coolant addition or “mixing loss” on aerodynamic performance is formulated for the turbine, where mixing takes place between gas streams of different compositions as well as static temperatures. To do this, a second-law efficiency m
Publikováno v:
Combustion and Flame. 149:392-408
The reacting double scalar mixing layer (RDSML) is investigated as a canonical multistream flow and a model problem for simple piloted diffusion flames. In piloted diffusion flames, the reacting fuel and oxidizer streams are initially separated by a
The Dissipation Function-Based Efficiency for Turbomachinery: Part 2 — The Power of a Cooled Turbine
Autor:
Chong M. Cha
Publikováno v:
Volume 2A: Turbomachinery.
Euler’s turbine equation is generalized to include cooling flow addition. Euler’s turbine equation for the uncooled case is still used for the design and analysis of today’s cooled turbines. A simple, one-dimensional control volume model is dev
Publikováno v:
Proceedings of the Combustion Institute. 30:793-800
The flamelet/progress variable approach (FPVA) has been proposed by Pierce and Moin as a model for turbulent non-premixed combustion in large-eddy simulation. The filtered chemical source term in this model appears in unclosed form, and is modeled by
Publikováno v:
Combustion Theory and Modelling. 7:317-332
Extinction and re-ignition in non-premixed turbulent combustion is investigated. A flamelet formulation accounting for transport along mixture fraction iso-surfaces is developed. A new transport term appears in the flamelet equations, which is modell
Autor:
Chong M. Cha, Heinz Pitsch
Publikováno v:
Combustion Theory and Modelling. 6:425-437
Higher-order, conditional moment closure approaches to modelling local extinction and reignition in turbulent, non-premixed combustion are investigated. This is done by studying closure strategies of the conditional source term itself. Feasibility st
Autor:
Chong M. Cha
Publikováno v:
Volume 2C: Turbomachinery.
The effect of coolant addition or “mixing loss” on aerodynamic performance is formulated for the turbine, where mixing takes place between gas streams of different compositions as well as static temperatures. To do this, a second law efficiency m
Publikováno v:
Physics of Fluids. 13:3824-3834
The scalar dissipation rate is introduced as a second conditioning variable into the first-moment, singly conditional moment closure model to describe extinction and reignition effects in turbulent, nonpremixed combustion. A priori testing of the com