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Effect of dilatation on scalar dissipation in turbulent premixed flames

- N. Swaminathan, K. Bray
- Physics
- 1 December 2005

The scalar dissipation rate signifies the local mixing rate and thus plays a vital role in the modeling of reaction rate in turbulent flames. The local mixing rate is influenced by the turbulence,… Expand

171 21

Scalar Dissipation Rate Modeling and its Validation

- H. Kolla, J. Rogerson, N. Chakraborty, N. Swaminathan
- Physics
- 27 February 2009

A simple algebraic model for the Favre averaged scalar dissipation rate, c, in high Damkohler number premixed flames is obtained from its transport equation by balancing the leading order terms.… Expand

168 13

Interaction of turbulence and scalar fields in premixed flames

- N. Swaminathan, R. Grout
- Physics
- 17 April 2006

The interaction of turbulence with progress variable, c, field in a premixed flame is studied. This interaction is characterized by the correlation c,ieijc,j¯, where the overbar denotes an… Expand

118 10

Strained flamelets for turbulent premixed flames, I: Formulation and planar flame results

- H. Kolla, N. Swaminathan
- Chemistry
- 1 May 2010

Abstract A strained flamelet model is proposed for turbulent premixed flames using scalar dissipation rate as a parameter. The scalar dissipation rate of reaction progress variable is a suitable… Expand

57 10

Strained flamelets for turbulent premixed flames II: Laboratory flame results

- H. Kolla, N. Swaminathan
- Chemistry
- 1 July 2010

Abstract The predictive ability of strained flamelets model for turbulent premixed flames is assessed using Reynolds Averaged Navier Stokes (RANS) calculations of laboratory flames covering a wide… Expand

47 9

Influence of the Damköhler number on turbulence-scalar interaction in premixed flames. I. Physical insight

- N. Chakraborty, N. Swaminathan
- Physics
- 17 April 2007

Scalar dissipation rate is a central quantity in turbulent flame modeling as it is closely related to the reaction rate. It is well known that turbulence-scalar interaction plays a vital role in… Expand

144 8

Turbulent Premixed Flames

- N. Swaminathan, K. Bray
- Engineering, Materials Science
- 2 January 2014

1. Fundamentals and challenges K. N. C. Bray and N. Swaminathan 2. Modelling D. Bradley, L. Vervisch, V. Moureau, P. Domingo, D. Veynante, N. Chakraborty, M. Champion, A. Mura, N. Swaminathan and R.… Expand

92 8- PDF

A tomographic PIV resolution study based on homogeneous isotropic turbulence DNS data

- N. Worth, T. Nickels, N. Swaminathan
- Physics
- 16 February 2010

In order to accurately assess measurement resolution and measurement uncertainty in DPIV and TPIV measurements, a series of simulations were conducted based on the flow field from a homogeneous… Expand

87 7

Finite rate chemistry and presumed PDF models for premixed turbulent combustion

- K. Bray, M. Champion, P. Libby, N. Swaminathan
- Chemistry
- 1 September 2006

The sensitivity of the prediction of mean reaction rates in turbulent premixed flames to presumed PDF shape is studied. Three different presumed PDF shapes are considered: (i) a beta function PDF,… Expand

108 7

Geometry and interaction of structures in homogeneous isotropic turbulence

- T. Leung, N. Swaminathan, P. Davidson
- Physics
- Journal of Fluid Mechanics
- 29 August 2012

Abstract A strategy to extract turbulence structures from direct numerical simulation (DNS) data is described along with a systematic analysis of geometry and spatial distribution of the educed… Expand

64 6

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