A consistent hybrid PDF method: implementation details and application to the simulation of a bluff-body stabilised flame
type: Item
instance of: scholarly article
title: A consistent hybrid PDF method: implementation details and application to the simulation of a bluff-body stabilised flame
zbMATH Open document ID: 1189.76758
DOI: 10.1504/PCFD.2006.009492
author: J. Martínez
published in: Progress in Computational Fluid Dynamics
publication date: 2010-06-28T00:00:00Z
review text: Summary: PDF simulations of a bluff-body stabilised flame studied experimentally by Dally et al. have been performed using a hybrid Finite-Volume /particle method in combination with a local time-stepping algorithm. Using mixture fraction as only independent scalar and a flamelet chemistry model, satisfactory results for flow field and mean temperature are obtained. In the proposed hybrid method, the Finite-Volume submodel plays a leading role since it provides the mean velocity, mean velocity gradients, mean pressure gradient, mean dissipation and the gradients of Reynolds stresses used in the particle submodel, resulting in a low bias error. Details on the implementation are given, correction algorithms are presented and a new iteration averaging method is proposed. Despite an inconsistency in the treatment of triple correlation terms, the difference between the Reynolds stresses resolved in the Finite-Volume submodel and extracted from the ensemble of particles appears to be very small, demonstrating that the correction algorithms ensure consistency.
Mathematics Subject Classification ID: 76V05
Mathematics Subject Classification ID: 76M12
Mathematics Subject Classification ID: 76M28
Mathematics Subject Classification ID: 76F25
Mathematics Subject Classification ID: 80A25
zbMATH DE Number: 5727171
zbMATH Keywords: probability density function
zbMATH Keywords: PDF methods
zbMATH Keywords: joint velocity-composition PDF
zbMATH Keywords: stochastic Lagrangian modelling
zbMATH Keywords: second moment closure
zbMATH Keywords: finite-volume method
zbMATH Keywords: particle method
zbMATH Keywords: bias error
zbMATH Keywords: iteration averaging
zbMATH Keywords: bluff-body stabilised flame
zbMATH Keywords: CFD
zbMATH Keywords: computational fluid dynamics
zbMATH Keywords: turbulent flows
MaRDI profile type: Publication
full work available at URL: pcfd.2006.009492
OpenAlex ID: W1987050913
description: scientific article; zbMATH DE number 5727171