The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 18, 2015
Filed:
May. 10, 2012
Kin Pong Lo, Fremont, CA (US);
John K. Eaton, Stanford, CA (US);
Kin Pong Lo, Fremont, CA (US);
John K. Eaton, Stanford, CA (US);
THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY, Palo Alto, CA (US);
Abstract
A diffuser () expanding a gas flow (F) upstream of a heat recovery steam generator () of a combined cycle power plant (). An outer wall () of the diffuser includes a smoothly lofted backward facing step () effective to fix a location of a flow recirculation bubble () under conditions conducive to flow separation. The step has a varying step height (H, H) about a circumference of the step edge (). The varying step height segments the recirculation bubble into small cells () located downstream of each peak () of the step height and reducing a reattachment length (L) of the bubble, thereby facilitating a reduction of the overall length of the diffuser.