Results 151 to 160 of about 72,478 (206)

The Ophthalmology Surgical Competency Assessment Rubric for penetrating keratoplasty. [PDF]

Indian J Ophthalmol
Shoukry M, Bernhisel AA, Rivkin AC, Chan CC, Grandin JC, Lotfi AC, Vanathi M, Golnik KC.   +7 more
europepmc   +1 more source

Relationship between applied face mask force and mask leak during simulated neonatal ventilation: a randomised simulation study. [PDF]

Arch Dis Child Fetal Neonatal Ed
Hannan J, Weiner G, Stirling L.
europepmc   +1 more source

Arthroscopic Reconstruction of the Acetabular Labrum Using an Autograft Hip Capsule. [PDF]

JBJS Essent Surg Tech
Siddiq BS, Gillinov SM, Cherian NJ, Martin SD.   +3 more
europepmc   +1 more source

Airtight compartmentalization of the anterior skull base reconstructed using a pedicled pericranial periosteal flap: illustrative case. [PDF]

J Neurosurg Case Lessons
Kashiwagi S, Fujimoto M, Otsuki S, Ogata H, Kamata T, Seki N, Tani S.   +6 more
europepmc   +1 more source

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Large-Eddy Simulation of Rim Seal Ingestion

Volume 4: Heat Transfer, Parts A and B, 2010
Unsteady flow dynamics in turbine rim seals are known to be complex and attempts accurately to predict the interaction of the mainstream flow with the secondary air system cooling flows using CFD with RANS turbulence models have proved difficult. In particular, published results from RANS models have over-predicted the sealing effectiveness of the rim ...
O'Mahoney, TSD, Hills, Nicholas, Chew, John, Scanlon, T   +3 more
openaire   +2 more sources

A Novel Design of Rim Sealing Flow for Improving Sealing Effectiveness

Journal of Engineering for Gas Turbines and Power, 2023
AbstractRim seal structures and sealing flows are essential in aero engines for preventing hot gas ingestion from mainstream to turbine disk cavities. A novel design method of rim sealing flow path based on auxiliary sealing holes and sealing air re-distributions has been proved to improve sealing effectiveness. The present paper uses this method to re-
Du Qiang, Wang Ruonan, Xie Lei, Liu Guang, Lian Zengyan   +4 more
openaire   +1 more source

Labyrinth Seal Design Change to Reduce Rim Seal Coolant

40th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit, 2004
In order to seal the roto r-stator disc -rim cavities in the turbine section of gas turbine engines against hot gas ingestion, at least one labyrinth seal with several teeth is required in the rim cavity . In accordance with t he seal clearance and tooth pitch , an interesting interact ion between the supplied cooling flow and hot gas ingestion occur s
Dong-Chun Choi, David Rhode, Alexander Mirzamoghadam   +2 more
openaire   +1 more source

Egress Interaction Through Turbine Rim Seals

Volume 5B: Heat Transfer, 2017
Engine designers require accurate predictions of ingestion (or ingress) principally caused by circumferential pressure asymmetry in the mainstream annulus. Cooling air systems provide purge flow designed to limit metal temperatures and protect vulnerable components from the hot gases which would otherwise be entrained into disc cavities through ...
James A. Scobie, Fabian P. Hualca, Carl M. Sangan, Gary D. Lock   +3 more
openaire   +1 more source