Transport Phenomena (TP) | PD 26 366Y

Frequently Asked Questions (FAQs): NSF Transport Phenomena (TP) Program

1) What is the NSF Transport Phenomena (TP) program?

The National Science Foundation (NSF) Transport Phenomena (TP) program is a fundamental research grant opportunity focused on understanding, modeling, and ultimately controlling how mass, momentum, energy, and chemical species move through and across systems. The program aims to advance the underlying science of transport across multiple length and time scales, connecting microscale mechanisms (such as interfacial effects and particle interactions) to macroscale behavior (such as flow stability, turbulence, and bulk properties).

2) What kinds of research does the TP program support?

TP supports projects that are experimental, theoretical, computational, or any combination of these approaches, as long as they contribute genuinely new understanding or new analytical/modeling methods in transport phenomena. A common theme is addressing complex transport behavior that cannot be captured well by simplified models and building frameworks that link observed behavior to underlying physics and chemistry.

3) Is this program focused on basic research or applied outcomes?

The program is rooted in basic principles and fundamental research, but proposals are expected to articulate a clear line of sight to how the resulting knowledge or methods could translate into engineering impact. In other words, the emphasis is on fundamental advances with a credible connection to downstream engineering relevance.

4) What national priority areas does TP connect to?

NSF frames TP as enabling progress in areas tied to national priorities, including advanced manufacturing (including AI-enabled manufacturing), biotechnology, microelectronics, energy production and use, nuclear energy, and quantum science and engineering.

5) What transport processes are central to the program?

The program broadly targets transport of mass, momentum, energy, and chemical species. This can include processes such as diffusion, convection, conduction, phase change, and reactive transport, along with the modeling and control of these processes across scales.

6) Does TP support both single-phase and multiphase transport research?

Yes. TP is broadly interested in both single-phase and multiphase transport, including situations where multiple states of matter or dispersed phases interact (for example, bubbles and droplets in liquids, particles in suspensions, or aerosols in gases).

7) What fluid dynamics topics are highlighted for multiphase and complex flows?

Within fluid dynamics and multiphase systems, TP highlights interest in flow separation, transition to turbulence, drag reduction, cavitation, instabilities, and reactive flows. These areas span classical and emerging challenges, such as predicting transition to turbulence, designing drag-reducing strategies, and understanding cavitation that can damage components and degrade performance.

8) What does TP mean by connecting microscale dynamics to macroscale outcomes?

TP encourages work that explicitly links microscale mechanisms (like colloidal forces, surfactants, particle interactions, or particle shape effects) to macroscale outcomes (like effective viscosity, mixing, flow stability, or system-level performance). The intent is to build multi-scale understanding and predictive capability.

9) What types of "fluids" are considered relevant under TP?

The program uses a broad definition of fluids and includes traditional liquids and gases as well as suspensions, emulsions, granular materials, active fluids, biological fluids, colloids, aerosols, and systems involving surfactants, bubbles, and drops.

10) What interface-related research areas are emphasized?

A major emphasis area is physicochemical transport and behavior at interfaces (fluid-fluid and fluid-solid). Topics include adsorption and desorption (for nanoparticles, surfactants, and other species), bulk and interfacial rheology, wetting and capillarity, electrokinetic phenomena, and flow through porous media.

11) Does the program include research on porous media transport?

Yes. Flow through porous media is explicitly included, with relevance to applications such as filtration, subsurface flows, batteries, catalysis supports, and related systems where transport is mediated by porous structures.

12) Is directed or self-assembly within scope for TP?

Yes. TP calls out directed and self-assembly of particles, connecting interfacial transport to structure formation, patterning, and materials fabrication.

13) What thermal sciences topics does TP support?

Thermal sciences are a key pillar. TP supports research in thermodynamics and thermal transport across conduction, diffusion, convection, phase change, and radiation. This includes work involving complex structures, interfaces, microelectronic devices, and biological environments, and it welcomes multi-scale heat transfer research.

14) Are nanoscale and quantum thermal transport topics eligible?

Yes. The program explicitly welcomes proposals involving phonon transport and quantum thermal phenomena, reflecting interest in heat transport limits and opportunities in nanoscale and quantum-relevant systems.

15) Does TP support combustion and reacting flows research?

Yes. Combustion and reacting flows are explicitly encouraged. Topics include combustion of gas, liquid, and solid fuels; chemical kinetics modeling; turbulence-chemistry interactions; detonations; plasma-assisted reacting flows; sustainable fuels; pollutant control mechanisms; and in situ diagnostics for measuring key quantities during combustion.

16) Is wildland fire research included in this opportunity?

Yes. TP supports fundamental research on wildland fire behavior, particularly efforts aimed at preventing spread, inhibiting growth, and improving prediction and mitigation at the wildland-urban interface.

17) Who is the issuing agency for this funding opportunity?

The issuing agency is the U.S. National Science Foundation (NSF).

18) What is the Funding Opportunity Number for this program?

The Funding Opportunity Number listed for the TP program is PD 26 366Y.

19) What CFDA number is associated with this opportunity?

The opportunity is listed under CFDA 47.041.

20) What is the broad category for this opportunity?

The opportunity is categorized under science and technology and other research and development.

21) Who is eligible to apply based on the information provided?

The source information indicates the opportunity is eligible for unrestricted applicants, meaning there is not a narrow applicant-type limitation stated in the provided text.

22) What is the listed closing date, and what might it imply?

The listed closing date in the provided source data is 2076-08-20. This suggests the program may be long-running or continuously listed rather than tied to a single one-time deadline. Applicants are expected to confirm current submission windows and any program-specific guidance on the NSF site.

23) Are partnerships relevant to the TP program?

Yes. NSF notes that partnerships are part of its broader strategy to accelerate discovery and innovation. The opportunity references NSF Engineering partnership mechanisms, which may matter for teams aiming to connect academic research with industry, other agencies, or international collaborators.

24) Does TP require a specific research method (experimental vs. computational)?

No. The program supports experimental, theoretical, computational, or combined approaches, as long as the work advances fundamental understanding or introduces new analytical and modeling approaches in transport phenomena.

25) What is the main theme that ties TP projects together?

A recurring theme is developing deeper, more predictive understanding of complex transport behavior across scales, particularly where simplified models are insufficient, and providing a credible path from fundamental discovery to engineering impact.