RESEARCH ACTIVITIES OF SHANKAR MAHALINGAM
2D Particle Image Velocimetry (PIV) facility at UCR
1) Implementing Reduced Reaction Mechanisms in Simulations of Nonpremixed Flames
An “image” of computed temperature field as a counterrotating vortex pair interacts with an initially planar diffusion flame (by Joshua Hsu and S. Mahalingam) - work funded by ACS-PRF.
2) Developing subgrid scale combustion models for application in wildland fire modeling
Results from 2D Direct Numerical Simulation of a nonpremixed flame between a pyrolysis gas mixture and air. The video shows instantaneous consumption rate of methane gas and the velocity vector in a decaying turbulent flow (by Watiit Pakdee, Xiangyang Zhou, and S. Mahalingam) - workd funded by NSF. Click here for additional details.
3) Experimental investigation of wildland fire spread
An image of flame spreading across chapparal fuel placed on a test bed. Experiments conducted at the Forest Fire Laboratory, Riverside (Lulu Sun, Xiangyang Zhou, David Weise, & S. Mahalingam) - funded by USDAFS through the Forest Fire Laboratory, Riverside. Click here for additional details
4) Investigation of marginal burning through large eddy simulations
Animated movie shows a 2D slice from a 3D LES computation of fire spreading up a chaparral fuel bed. Note stem space below the fuel bed (fuel bed outline sown in green). Works supported by USDAFS through a cooperative agreement with the Forest Fire Laboratory, Riverside, CA.
5) Investigation of the flow structure within a modeled Fontan junction relevant to cardiovascular applications
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SVC:IVC 50:50 |
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SVC:IVC 33:66 |
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SVC:IVC 25:75 |
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Numerically computed cross sectional velocity profiles and shear distributions for Model 1 at different SVC:IVC flow rate ratios. The velocity vectors are indicated by the arrows and shear stress contours (dynes/cm2) by the grayscale with scale as included in the figure (by Yottana Khunatorn, S. Mahalingam, C. DeGroff, and Robin Shandas).
