FLOW OF THE ENTRANCE REGION IN A POROUS PIPE - 3. TRANSIENT FLOW.

Takahiko Tanahashi, Hideki Kawai, Jun Masuzawa, Tatsuo Sawada, Tsuneyo Ando

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

This study deals with a transient laminar flow, which is started from rest, in the entrance region of a porous pipe. This flow analysis is applied to transpiration cooling systems and research equipment for production of tidal current. In this report, the problem is analyzed by a modified momentum integral method using the integral form of the equations of continuity, momentum and energy. The following conclusions were obtained; (1) Dynamic distributions of velocity profiles, wall frictions and pressures are obtained numerically. (2) The relation between the flow rate of injection or suction and inlet length of the entrance region is made clear. (3) Each dynamic state in the pipe is found with changeable inlet velocities and with variable suctions or injections. (4) It is confirmed that the modified momentum integral method is valid for the slip velocity on the porous wall which makes the inlet length short.

Original languageEnglish
Title of host publicationBulletin of the JSME
Pages1070-1078
Number of pages9
Volume25
Edition205
Publication statusPublished - 1982 Jul
Externally publishedYes

Fingerprint

Momentum
Pipe
Transpiration
Cooling systems
Laminar flow
Flow rate
Friction

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Tanahashi, T., Kawai, H., Masuzawa, J., Sawada, T., & Ando, T. (1982). FLOW OF THE ENTRANCE REGION IN A POROUS PIPE - 3. TRANSIENT FLOW. In Bulletin of the JSME (205 ed., Vol. 25, pp. 1070-1078)

FLOW OF THE ENTRANCE REGION IN A POROUS PIPE - 3. TRANSIENT FLOW. / Tanahashi, Takahiko; Kawai, Hideki; Masuzawa, Jun; Sawada, Tatsuo; Ando, Tsuneyo.

Bulletin of the JSME. Vol. 25 205. ed. 1982. p. 1070-1078.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Tanahashi, T, Kawai, H, Masuzawa, J, Sawada, T & Ando, T 1982, FLOW OF THE ENTRANCE REGION IN A POROUS PIPE - 3. TRANSIENT FLOW. in Bulletin of the JSME. 205 edn, vol. 25, pp. 1070-1078.
Tanahashi T, Kawai H, Masuzawa J, Sawada T, Ando T. FLOW OF THE ENTRANCE REGION IN A POROUS PIPE - 3. TRANSIENT FLOW. In Bulletin of the JSME. 205 ed. Vol. 25. 1982. p. 1070-1078
Tanahashi, Takahiko ; Kawai, Hideki ; Masuzawa, Jun ; Sawada, Tatsuo ; Ando, Tsuneyo. / FLOW OF THE ENTRANCE REGION IN A POROUS PIPE - 3. TRANSIENT FLOW. Bulletin of the JSME. Vol. 25 205. ed. 1982. pp. 1070-1078
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