Heat and mass transfer in a permeable fabric system used for Personal Protective Equipment (PPE) was investigated using hot air jet impingement conditions to mimic the jet exhaust of Short Take-Off and Vertical Landing (STOVL) aircraft. The STOVL aircraft uses a thrust-vectoring nozzle of the jet engine and a lift fan in order to vertically land and take off a short runaway. The jet engine exhaust is a new kind of thermal hazard for military personnel operating within an affected zone of the jet exhaust. An experimental approach was used to measure the thermal response of a fabric system consisting of permeable fabric samples and air pocket using a high-speed jet impingement. The jet impingement conditions consisted of two different temperatures: one of 100°C and another of 200°C at a jet impingement velocity of 32 m/s. Air was used as the working fluid. In this study, two permeable fabrics, (NOMEX IIIA and Cotton) commonly used for the Personal Protective Equipment (PPE) were investigated. The physical properties (porosity, permeability, Ergun coefficient, and density) and the thermo-physical properties (thermal diffusivity, thermal conductivity, and specific heat) of the fabrics were measured. A one-dimensional, two-medium formulation assuming thermal non-equilibrium between solid (fabric) and gas (air) phases in the fabric layer was used for the numerical analysis. The measurement results from the fabric experiment were used to define boundary conditions and adjust various heat transfer correlations and input data used in the numerical model. The experimental and numerical results of the temperatures of the fabric system were compared. The effects of the air temperature of the jet impingement on the thermal response of the fabric system were discussed.
Skip Nav Destination
2010 14th International Heat Transfer Conference
August 8–13, 2010
Washington, DC, USA
Conference Sponsors:
- Heat Transfer Division
ISBN:
978-0-7918-4940-8
PROCEEDINGS PAPER
Heat and Mass Transfer in a Permeable Fabric System Under Hot Air Jet Impingement Available to Purchase
Sangsoo Lee,
Sangsoo Lee
University of Nevada, Reno, Reno, NV
Search for other works by this author on:
Chanwoo Park,
Chanwoo Park
University of Nevada, Reno, Reno, NV
Search for other works by this author on:
Devdatta Kulkarni,
Devdatta Kulkarni
Advanced Cooling Technologies, Inc., Lancaster, PA
Search for other works by this author on:
Sanjida Tamanna,
Sanjida Tamanna
Advanced Cooling Technologies, Inc., Lancaster, PA
Search for other works by this author on:
Ted Knox
Ted Knox
Air Force Research Laboratory, Wright-Patterson AFB, OH
Search for other works by this author on:
Sangsoo Lee
University of Nevada, Reno, Reno, NV
Chanwoo Park
University of Nevada, Reno, Reno, NV
Devdatta Kulkarni
Advanced Cooling Technologies, Inc., Lancaster, PA
Sanjida Tamanna
Advanced Cooling Technologies, Inc., Lancaster, PA
Ted Knox
Air Force Research Laboratory, Wright-Patterson AFB, OH
Paper No:
IHTC14-22695, pp. 619-628; 10 pages
Published Online:
March 1, 2011
Citation
Lee, S, Park, C, Kulkarni, D, Tamanna, S, & Knox, T. "Heat and Mass Transfer in a Permeable Fabric System Under Hot Air Jet Impingement." Proceedings of the 2010 14th International Heat Transfer Conference. 2010 14th International Heat Transfer Conference, Volume 5. Washington, DC, USA. August 8–13, 2010. pp. 619-628. ASME. https://doi.org/10.1115/IHTC14-22695
Download citation file:
12
Views
Related Proceedings Papers
Related Articles
Forced Convection Heat Transfer and Hydraulic Losses in Graphitic Foam
J. Heat Transfer (September,2007)
Experimental Evaluation in Thermal Conductivity Enhancement and Heat Transfer Optimization of Eco-Friendly Al 2 O 3 –Pure Coconut Oil Based Nano Fluids
J. Thermal Sci. Eng. Appl (June,2021)
Planar Simulation of Bubble Growth in Film Boiling in Near-Critical Water Using a Variant of the VOF Method
J. Heat Transfer (June,2004)
Related Chapters
Introduction
Introduction to Finite Element, Boundary Element, and Meshless Methods: With Applications to Heat Transfer and Fluid Flow
Control and Operational Performance
Closed-Cycle Gas Turbines: Operating Experience and Future Potential
Studies Performed
Closed-Cycle Gas Turbines: Operating Experience and Future Potential