Frictional characteristics and heat transfer of antimisting fuels in tubes. Final report Aug 80-Sep 81

Technical Report · Sun Aug 01 04:00:00 EDT 1982

OSTI ID:6496438

Wat, J; Sarohia, V

Experiments have been performed to determine the skin friction and heat transfer behavior of antimisting kerosene (AMK) in pipe flows. The additive used in the AMK was FM-9 developed by Imperial Chemical Industries. AMK has been developed as an aviation safety fuel to reduce post-crash fires. The principle aim of the present investigation was to determine the modification in flow and heat transfer behavior caused by the presence of the antimisting polymer additive in jet fuel. The present study indicates that the AMK skin friction versus Reynolds number, or Nusselt number versus Reynolds number behavior, can be divided into three regions: (1) Newtonian laminar region, (2) shear-thickening transition region, and (3) drag-reducing turbulent region. At low flow rates, AMK has Newtonian behavior, i.e., constant viscosity. At a certain critical wallshear rate which depends on the fuel temperature and additive concentration, shear thickening occurs and causes a large increase in skin friction and heat transfer rates. In the third region, the skin friction and heat transfer rates drop rapidly and fall below the predicted Newtonian flow skin friction and heat transfer values; e.g., for 0.3 percent FM-9 AMK at a temperature of 20 C, 22,000 and 10,000. Beyond these points, there is a reduction in skin friction and heat transfer rates.

• Research Organization: Jet Propulsion Lab., Pasadena, CA (USA)
• OSTI ID: 6496438
• Report Number(s): AD-A-121476/6
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
023000* -- Petroleum-- Properties & Composition
ADDITIVES
DIMENSIONS
ENERGY TRANSFER
FLOW RATE
FLUID FLOW
FUEL ADDITIVES
FUELS
GAS FLOW
HEAT TRANSFER
KEROSENE
LAMINAR FLOW
LIQUID FUELS
MECHANICAL PROPERTIES
PETROLEUM PRODUCTS
PIPES
POLYMERS
REYNOLDS NUMBER
SHEAR PROPERTIES
THICKNESS
TURBULENCE
VISCOSITY