東華大學圖書館 |

Language: English

Help

回圖書館首頁

手機版館藏查詢

Back

Switch To: Labeled | MARC Mode | ISBD

Large-eddy simulation of combustion ...

Stanford University.

Linked to FindBook

Google Book

Amazon

博客來

Large-eddy simulation of combustion systems with convective heat-loss.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Large-eddy simulation of combustion systems with convective heat-loss./
Author:	Shunn, Lee.
Description:	176 p.
Notes:	Adviser: Parvis Moin.
Contained By:	Dissertation Abstracts International70-03B.
Subject:	Applied Mechanics. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3351475
ISBN:	9781109077520

Large-eddy simulation of combustion systems with convective heat-loss.
Shunn, Lee.

Large-eddy simulation of combustion systems with convective heat-loss. - 176 p.

Adviser: Parvis Moin.

Thesis (Ph.D.)--Stanford University, 2009.

Computer simulations have the potential to viably address the design challenges of modern combustion applications, provided that adequate models for the prediction of multiphysics processes can be developed. Heat transfer has particular significance in modeling because it directly affects thermal efficiencies and pollutant formation in combustion systems. Convective heat transfer from flame-wall interaction has received increased attention in aeronautical propulsion and power-generation applications where modern designs have trended towards more compact combustors with higher surface-to-volume ratios, and in diesel engines where enclosed volumes and cool walls provide ample conditions for thermal quenching. As intense flame-wall interactions can induce extremely large heat fluxes, their inclusion is important in computational models used to predict performance and design cooling systems.

ISBN: 9781109077520Subjects--Topical Terms:

1018410
Applied Mechanics.

Large-eddy simulation of combustion systems with convective heat-loss.
LDR:03096nmm 2200301 a 45 001 890713
005 20101104
008 101104s2009 ||||||||||||||||| ||eng d
020 $a 9781109077520
035 $a (UMI)AAI3351475
035 $a AAI3351475
040 $a UMI $c UMI
100 1 $a Shunn, Lee. $3 1064677
245 1 0 $a Large-eddy simulation of combustion systems with convective heat-loss.
300 $a 176 p.
500 $a Adviser: Parvis Moin.
500 $a Source: Dissertation Abstracts International, Volume: 70-03, Section: B, page: 1912.
502 $a Thesis (Ph.D.)--Stanford University, 2009.
520 $a Computer simulations have the potential to viably address the design challenges of modern combustion applications, provided that adequate models for the prediction of multiphysics processes can be developed. Heat transfer has particular significance in modeling because it directly affects thermal efficiencies and pollutant formation in combustion systems. Convective heat transfer from flame-wall interaction has received increased attention in aeronautical propulsion and power-generation applications where modern designs have trended towards more compact combustors with higher surface-to-volume ratios, and in diesel engines where enclosed volumes and cool walls provide ample conditions for thermal quenching. As intense flame-wall interactions can induce extremely large heat fluxes, their inclusion is important in computational models used to predict performance and design cooling systems.
520 $a In the present work, a flamelet method is proposed for modeling turbulence/chemistry interactions in large-eddy simulations (LES) of non-premixed combustion systems with convective heat-losses. The new method is based on the flamelet/progress variable approach of Pierce & Moin (J. Fluid Mech. 2004, 504:73-97) and extends that work to include the effects of thermal-losses on the combustion chemistry. In the new model, chemical-state databases are constructed by solving one-dimensional diffusion/reaction equations which have been constrained by scaling the enthalpy of the system between the adiabatic state and a thermally-quenched reference state. The solutions are parameterized and tabulated as a function of the mapping variables: mixture fraction, reaction progress variable, and normalized enthalpy. The new model is applied to LES of non-premixed methane-air combustion in a coaxial-jet with isothermal wall-conditions to describe heat transfer to the confinement. The resulting velocity, species concentration, and temperature fields are compared to experimental measurements and to numerical results from the adiabatic model. The new method shows distinct improvement in the prediction of temperature, mixture composition, and heat flux in the near-wall regions of the combustor.
590 $a School code: 0212.
650 4 $a Applied Mechanics. $3 1018410
650 4 $a Energy. $3 876794
650 4 $a Engineering, Mechanical. $3 783786
690 $a 0346
690 $a 0548
690 $a 0791
710 2 $a Stanford University. $3 754827
773 0 $t Dissertation Abstracts International $g 70-03B.
790 $a 0212
790 1 0 $a Moin, Parvis, $e advisor
791 $a Ph.D.
792 $a 2009
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3351475