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

Conference · Wed Feb 01 04:00:00 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-
• Conference Information: Journal Name: Am. Soc. Mech. Eng., (Pap.); (United States) Journal Volume: 84-FE-5
• Country of Publication: United States
• Language: English

Related Subjects

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