Influence of non-adiabatic wall conditions on the cross-flow around a circular cylinder

Conference · Wed Feb 01 00:00:00 EST 1984 · Am. Soc. Mech. Eng., (Pap.); (United States)

OSTI ID:6559298

Macha, J M; Shafa, K S

The drag and heat transfer of a finite length circular cylinder in a cross-flow have been investigated in a wind tunnel at surface-to-freestream temperature ratios from 1.0 to 2.1 for freestream Reynolds numbers of 2.2 x 10/sup 5/ and 4.4 x 10/sup 5/. The measured surface pressures were integrated to determine the effect of cylinder temperature on the drag coefficient, and the average Nusselt number was calculated from the electrical power required to heat the cylinder. For the freestream Reynolds number of 4.4 x 10/sup 5/, the experimental data show that increasing the cylinder temperature caused a reverse-transition from supercritical to subcritical flow. As a result of the increased size of the low-velocity wake region, C /SUB D/ increased by 21 percent and Nu /SUB d/ decreased by 26 percent.

• Research Organization: The Univ. of Texas at Austin, Austin, TX
• OSTI ID: 6559298
• Report Number(s): CONF-840201-
• Journal Information: Am. Soc. Mech. Eng., (Pap.); (United States), Vol. 84-FE-5; Conference: ASME energy sources technology conference and exhibition, New Orleans, LA, USA, 12 Feb 1984
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
CYLINDERS
CRITICAL FLOW
DRAG
HEAT TRANSFER
FLUID MECHANICS
FLUID-STRUCTURE INTERACTIONS
NUSSELT NUMBER
PRESSURE MEASUREMENT
REYNOLDS NUMBER
SURFACE PROPERTIES
TEMPERATURE EFFECTS
WIND TUNNELS
ENERGY TRANSFER
FLUID FLOW
MECHANICS
TUNNELS
UNDERGROUND FACILITIES
420400* - Engineering- Heat Transfer & Fluid Flow