George W. Woodruff School of Mechanical Engineering

Georgia Institute of Technology Atlanta, GA

Atomistic Simulation & Energy (ASE) Research Group

Graduate Research Assistant 

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(I) Concentrated Solar Power (CSP) and Solid State Energy Conversion Systems (Sponsored by DOE)

Designed and analyzed a novel solid state energy conversion heat engine for solar thermal applications

  • Contributed to the design of a high temperature (1350°C) solar receiver for CSP with liquid metal as heat transfer fluid 
  • Proposed and designed a thermophotovoltaic system with thermal energy storage for CSP

In press

.(II) Lattice Thermal Conductivity of Random Semiconductor Alloys (Sponsored by NSF)

Showed the phonon scattering picture in alloys that has been used over the last 50 years is NOT CORRECT

  • Calculated phonon thermal conductivity of InGaAs thin films using atomistic approach with excellent agreement with experimental data
  • Collaborated with experimentalist to measure thermal conductivity of various alloys using Time Domain Thermoreflectance (TDTR)
  • Studied thermal conductivity of different materials using ab initio and molecular dynamics approaches

(III) Phonon Transport in Amorphous Solids (Sponsored by Intel and NSF)

Utilized molecular dynamics simulation to understand heat conduction in amorphous materials

  • Developed a new computational approach for classifying the vibrational modes in disordered solids
  • Conducted fundamental study of heat conduction and phonon transport in amorphous Carbon and Silica
  • Developed a method to distinguish optical and acoustic diffusons and locons in amorphous solids 

(IV) Empirical Potential Development

Utilized Density Functional Theory (DFT) and Genetic Algorithm to develop empirical interatomic potentials (EIPs) for molecular dynamics simulations.

  • Used Genetic Algorithm (GA) to develop interatomic potential for crystalline solids and random alloys using DFT inputs.
  • Calculated thermal properties of various crystalline materials (Si, Ge, GaN, InAs, GaAs, etc) using both ab initio and EIP methods.

University of Missouri- Columbia

School Mechanical and Aerospace Engineering, Missouri, Columbia

Multiscale Thermal Transport Laboratory (MTTL)

Graduate Research Assistant

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(I) Electronics Cooling & Thermal Management (Sponsored by NSF)    

Proposed different strategies to enhance the thermal performance of various liquid/air-cooled heat sinks

  • Proposed a metal foam air-cooled heat sinks that enhances cooling performance over 400%
  • Designed a novel octadecane-polyalphaolefin(PAO)-cooled microtube heat sink with tangential impingement
  • Optimized microchannel heat exchangers with Al2O3/CuO nanofluid coolants using entropy generation minimization approach
  • Analyzed the thermal performance of tangential microchannel heat sinks and proposed improvements to cooling efficiency 

(II) Boiling Heat Transfer and Phase Change Materials (Sponsored by NSF)  

Conducted fundamental study on phase change heat transfer using atomistic and macro-scale models

  • Developed a molecular dynamics simulation model for normal and explosive boiling over various nanostructured surfaces
  • Performed two-dimensional VOF numerical simulation of nucleate boiling
  • Conducted fundamental study on the effect of phase change slurry on heat transfer enhancement
  • Developed a numerical model to analyze thermal performance of pulsating heat pipes

Karaj Azad University

School Mechanical Engineering,  Alborz, Iran

Research Assistant

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Heat Pipes, Microchannels, Air Cooled Thermal Management, and Turbine Blade Cooling

Studied the thermal and hydrodynamics performance of various heat pipes and microchannels

  • Obtained 2D analytical solution of full Navier-Stokes and energy equations  in parallel plate and circular microchannels
  • Proposed accurate 2D closed form analytical models to predict vapor/liquid flows in flat plate heat pipes for the first time
  • Developed simplified models to predict capillary limit in circular/annular heat pipes with great agreement with the CFD
  • Developed a 3D CFD model to study film cooling on a turbine rotor blade
  • Conducted optimization study on various liquid-cooled microchannel pin fin heat sinks with different pin geometries