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Thermal Transport Processes (TTP) Program

Theodore L. Bergman, Program Director NSF CBET November, 2008 (703) 292-8371 tbergman@nsf.gov. Thermal Transport Processes (TTP) Program. Promote the fundamental understanding of thermal transport (heat and mass transfer) at the microscopic, mesoscopic, and macroscopic levels for:

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Thermal Transport Processes (TTP) Program

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  1. Theodore L. Bergman, Program Director NSF CBET November, 2008 (703) 292-8371 tbergman@nsf.gov Thermal Transport Processes (TTP) Program

  2. Promote the fundamental understanding of thermal transport (heat and mass transfer) at the microscopic, mesoscopic, and macroscopic levels for: ● conversion & conservation of thermal energy, ● synthesis & processing of materials, ● cooling & heating of infrastructure and equipment, ● understanding thermal effects in & on biological matter, ● reducing the impact of industrial processes on the environment to meet societal needs. Program Scope

  3. Research, Workshops, and Supplements Involving: ● convection heat and mass transfer with and without phase change, ● diffusion and conduction at nano- and molecular scales, ● radiative transfer, ● understanding and tailoring the thermophysical properties of hard and soft matter, ● novel thermal energy conversion devices, biomedical protocols, diagnostic techniques, ● integration of nanoscale phenomena with system-level analysis, ● multimode transfer in multidisciplinary settings Representative Topics

  4. Examples CAREER: Fundamental Investigation and Thermal-Electrical Control of Ion, Fluid, and Biomolecular Transport through Nanochannels (Deyu Li, Vanderbilt University) • Transport through nanochannels: • of fundamental significance to biophysics • important for making ultra-sensitive single molecule sensors • rich phenomena including overlapped electric double layers (low electrolyte concentrations) and enhanced near-wall viscous resistance (high electrolyte concentrations)

  5. Examples CAREER: Microscale Two-Phase Zeotropic Flow in Energy Systems (Laura Schaefer, U. Pittsburgh) • Realistically simulates 3-D micro- to macroscopic multi-component, multi-phase systems • Simultaneously incorporates pressure and temperature gradients, body forces, and temperature gradients for density ratios up to 1000:1 • Parallelization over multiple graphic processor units greatly reduces solution times and costs

  6. Examples CAREER: Enhanced Two-phase Thermal Management Using Self-Sustained Flow Oscillations at the Microscale (Vinod Narayanan, Oregon State University) Hypothesis: Passively generated jet flow oscillations at targeted frequencies can enhance phase-change heat transfer rate Benefits: Energy-efficient, high heat flux thermal management Approach: Whole-field imaging experiments and modeling

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