Laminar free convection with variable fluid properties in vertical ducts having uniform wall temperature.

Aihara, Toshio; Maruyama, Shigenao; Choi, Junseop

doi:10.1299/kikaib.51.3582

Cited by 4 publications

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Figure 9 shows the relationship between c and average heat transfer coefficient h m for several heights of the channel l. The average heat transfer coefficient h m was obtained with Eqs. (1), (2), (4). When c is more than 10 mm, h m does not increase.…”

Section: Relationship Between Rayleigh Number and Nusselt Numbermentioning

confidence: 94%

See 1 more Smart Citation

Effects of Wall Clearance of a Vertical Channel on Natural Air Cooling Capability

Nishino

Ishizuka

Nakagawa

et al. 2009

JTST

View full text Add to dashboard Cite

The cooling capability in compact electronic equipment of natural convective flow fields was investigated. A relationship between air passage width in the channel and natural cooling capability was obtained. Temperature and velocity measurements were carried out using a channel model of electronic equipment comprising a vertical duct with a rectangular cross-section. The channel model comprised two copper walls and two transparent acrylic walls. The clearance between the copper walls was used as a parameter in the channel model. Velocity profiles of natural cooling flow in the channel were quantitatively measured using particle image velocimetry (PIV). The temperature and velocity results demonstrated that changes in the velocity profiles closely depend on the wall clearances. Our studies indicate that a clearance of 8 to 10 mm is optimal for natural cooling in a channel of this type with the 56 mm channel depth.

show abstract

Section: Relationship Between Rayleigh Number and Nusselt Numbermentioning

confidence: 94%

“…Heat transfer by natural convection, aimed at optimizing heat sinks, has been reported (1)- (4) . These studies suggest a heat transfer correlation between the Rayleigh number and the Nusselt number.…”

Section: Introductionmentioning

confidence: 99%