JPS5740109A - Method and device for controlling boundary layer - Google Patents

Method and device for controlling boundary layer

Info

Publication number
JPS5740109A
JPS5740109A JP11442080A JP11442080A JPS5740109A JP S5740109 A JPS5740109 A JP S5740109A JP 11442080 A JP11442080 A JP 11442080A JP 11442080 A JP11442080 A JP 11442080A JP S5740109 A JPS5740109 A JP S5740109A
Authority
JP
Japan
Prior art keywords
flow
protrusion
fluid
velocity
separation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP11442080A
Other languages
Japanese (ja)
Other versions
JPS591886B2 (en
Inventor
Sunao Shiraishi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP55114420A priority Critical patent/JPS591886B2/en
Publication of JPS5740109A publication Critical patent/JPS5740109A/en
Publication of JPS591886B2 publication Critical patent/JPS591886B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Air-Flow Control Members (AREA)

Abstract

PURPOSE: To prevent separation from occurring because the flow of fluid along a wall surface changes the proceeding direction along the wall surface, by providing a locally accelerating protrusion at the separation point on an inside boundary wall.
CONSTITUTION: A locally accelerating protrusion 3, whose outline is smooth and whose upstream part as to the direction of flow of fluid projects sharply to the flow, is provided on at a separation point on an inside boundary wall 2. At a point II of the distribution of velocity of the fluid flow in the presence of the protrusion 3, the fluid flow near the wall 2 is sharply accelerated in a short section by the protrusion 3 so that the velocity u1 near the protrusion 3 is especially heightened. An effect similar to what is called Coanda effect can be produced by changing the direction of the flow after especially increasing the momentum of the portion with the velocity u1. For that reason, the direction of the flow can be changed while holding the pressure loss down and preventing separation, without disturbing the flow and using a separate motive power source.
COPYRIGHT: (C)1982,JPO&Japio
JP55114420A 1980-08-20 1980-08-20 Boundary layer control method and device Expired JPS591886B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55114420A JPS591886B2 (en) 1980-08-20 1980-08-20 Boundary layer control method and device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55114420A JPS591886B2 (en) 1980-08-20 1980-08-20 Boundary layer control method and device

Publications (2)

Publication Number Publication Date
JPS5740109A true JPS5740109A (en) 1982-03-05
JPS591886B2 JPS591886B2 (en) 1984-01-14

Family

ID=14637257

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55114420A Expired JPS591886B2 (en) 1980-08-20 1980-08-20 Boundary layer control method and device

Country Status (1)

Country Link
JP (1) JPS591886B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3615861A1 (en) * 1985-05-20 1986-11-20 Toshiba Ceramics Co., Ltd., Tokio/Tokyo SINTER BODY BASED ON SILICON CARBIDE AND METHOD FOR THE PRODUCTION THEREOF
JP2013209961A (en) * 2012-03-30 2013-10-10 Ebara Corp Pump device including separation prevention structure

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH476762A (en) * 1961-02-06 1969-08-15 Dow Corning Process for the production of organosilanes
JPS53119619U (en) * 1977-03-02 1978-09-22

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH476762A (en) * 1961-02-06 1969-08-15 Dow Corning Process for the production of organosilanes
JPS53119619U (en) * 1977-03-02 1978-09-22

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3615861A1 (en) * 1985-05-20 1986-11-20 Toshiba Ceramics Co., Ltd., Tokio/Tokyo SINTER BODY BASED ON SILICON CARBIDE AND METHOD FOR THE PRODUCTION THEREOF
JP2013209961A (en) * 2012-03-30 2013-10-10 Ebara Corp Pump device including separation prevention structure

Also Published As

Publication number Publication date
JPS591886B2 (en) 1984-01-14

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