Increasing interest has been given to swirl brakes as a means of reducing destabilizing rotordynamic.forces due to leakage flows in new high speed rocket turbopumps. Although swirl brakes have been used successfully in practice {such as with the Space Shuttle HPOTP), no experimental tests until now have been pegormed to demonstrate their beneficial effect over a range of leakage flow rates. The...

Numerous factors affect the amount of leakage from pipes, e.g. inside pressure, type pipe failure, soil around pipe, etc. Few researches have been done on effect environment discharge. In present study, pipes in presence different soils is experimentally investigated. Leakage a cracked polyethylene was simulated various with properties laboratory setup. Leakage- pressure relationships were obta...

Recent experiments conducted in the Rotor Force Test Facility at the California Institute of Technology have examined the effects of a tip leakage restriction and swirl brakes on the rotordynamic forces due to leakage flows on arl impeller undergoing a prescribed circular whirl. The experiments simulate the leakage flow conditions and geometry of the Alternate Turbopump Design (ATE)) of the Spa...

Vulvar lymphatic leakage is a severe complication associated with gynecological cancer treatments. However, standard treatment strategies have not yet been determined. We encountered a rare case of a 76-year-old multiparous woman suffering from massive lymphatic fluid leakage from the entire vulva, and papules developed and were identified as lymphangiomas. A large amount of straw-colored disch...

BACKGROUND Chylous leakage is a well-known complication after esophagectomy, but cervical chylous leakage is relatively rare, and considerable controversy remains regarding the appropriate management strategies. We herein report a case of cervical chylous leakage treated successfully by lipiodol lymphangiography. CASE PRESENTATION The patient, a 70-year-old man with middle thoracic esophageal...

Among the 981 silicon microstrip modules fabricated by the ATLAS SCT Japan group, 111 modules showed a micro-discharge, a rapid leakage current increase when the bias is raised, below 500V bias at least once in the series of the quality assurance testing. We have conducted a systematic study to understand the causes, including the hot spot localization using an infrared sensitive camera, and me...

OBJECTIVE Persistent air leakage following pulmonary resection is a major limiting factor for discharge from hospital. The aim of this study was to evaluate the sealing capacity of TachoSil for the closure of alveolar air leaks following parenchymal resections and to determine its effect on time to chest drain removal and duration of hospitalisation. METHODS A total of 173 patients undergoing...

The effect of the blade tip geometry of a high pressure gas turbine is studied experimentally and computationally for high speed leakage flows. For this purpose two simplified models are constructed, one models a flat tip of the blade and the second models a cavity tip of the blade. Experimental results are obtained from a transonic wind tunnel to show the static pressure distribution along the...