Heat transfer and pressure drop measurements in channels roughened by variously shaped ribs on one wall
| Autor: | Georg Schlindwein, Sebastian Ruck, Stefan Köhler, Frederik Arbeiter |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Pressure drop
Rib cage Materials science Reynolds number 02 engineering and technology Surface finish 01 natural sciences Nusselt number 010305 fluids & plasmas Transverse plane symbols.namesake 020303 mechanical engineering & transports 0203 mechanical engineering Control and Systems Engineering 0103 physical sciences Heat transfer Thermal symbols Electrical and Electronic Engineering Composite material Instrumentation |
| Zdroj: | Experimental Heat Transfer. 31:334-354 |
| ISSN: | 1521-0480 0891-6152 |
| Popis: | Heat transfer and pressure drop measurements were conducted to study the thermal-hydraulics in a square, round-edged channel roughened by ribs (e/Dh = 0.0638, p/e = 10) on one wall at Reynolds numbers ranging from 5.0 × 104 to 2.5 × 105. Three variously shaped ribs were investigated: Transverse ribs with square cross sections, transverse ribs, and upstream directed 60° V-shaped ribs with round-edged rib front and rear surfaces. Friction factors, Nusselt number ratios, roughness functions, and the thermal performance were presented. The highest heat transfer and best thermal performance is reached by the upstream directed V-shaped ribs. |
| Databáze: | OpenAIRE |
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