Webbläsaren som du använder stöds inte av denna webbplats. Alla versioner av Internet Explorer stöds inte längre, av oss eller Microsoft (läs mer här: * https://www.microsoft.com/en-us/microsoft-365/windows/end-of-ie-support).

Var god och använd en modern webbläsare för att ta del av denna webbplats, som t.ex. nyaste versioner av Edge, Chrome, Firefox eller Safari osv.

Numerical Predictions of Pressure Drop and Heat Transfer in a Blade Internal Cooling Passage with Continuous/Truncated Ribs

In English

Författare

Summary, in English

Ribs are often used in the mid-section of internal turbine blades to augment heat transfer from the blade wall to a coolant, but most research works are concerned only with continuous ribs attached to the side walls. In this paper, a turbulent flow and heat transfer of a rectangular passage with continuous and truncated ribs on opposite walls have been predicted numerically. Two types of ribs are studied: 90-deg ribs and 45-deg V-shaped ribs. The inlet Reynolds numbers range from 12,000 to 60,000. The complex three-dimensional turbulent flows inside the blade internal coolant passage and heat transfer between the rib-walls and side-walls are presented. The overall performances of six different ribbed passages are evaluated and compared. Numerical results show that the passage with truncated V-shaped ribs is very effective in improving the heat transfer performance with a low pressure drop.

Avdelning/ar

Publiceringsår

2012

Språk

Engelska

Sidor

573-590

Publikation/Tidskrift/Serie

Heat Transfer Research

Volym

43

Issue

6

Dokumenttyp

Artikel i tidskrift

Förlag

Begell House

Ämne

  • Energy Engineering

Nyckelord

  • heat transfer
  • rib
  • continuous
  • truncated
  • computation

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 1064-2285