Abstract Gas impingement jets are widely applied in industrial cooling processes. In continuous heat treatment lines of steel, aluminium and copper strips, jet nozzle systems utilised to achieve rapid or heating. The transfer depends on the flow but also geometric parameters such as strip distance shape. key challenge while designing sections is determine performance those their Nusselt number ...

A new experimental study is presented for a combustor with double-wall cooling design. The inner wall at the hot gas side features effusion 7-7-7 laidback fan-shaped holes, and outer cold an impingement hole pattern circular holes. Data have been acquired to assess thermal aerodynamic behavior of setup using new, scaled up, engine-similar test rig. Similarity includes Reynolds, Nusselt, Biot nu...

background patients who have shoulder pain usually have compensatory or contributory deviation of shoulder motion during arm elevation. in the traditional scapulohumeral rhythm, the share of the acromioclavicular (ac) and the sternoclavicular (sc) joint movements and also the role of ac internal rotation angle are unknown. objectives the main purpose of this study was to measure and compare the...

The recent advancement of cooling methodologies for critical components such as turbine blades, combustor liners, and afterburner liners has led to the development a combination impingement film cooling. present study proposes an efficient technique modern aero-engine liner based on jet To achieve this, numerical model is devised flow over corrugated with several jets impinging it. validated in...

The dynamic behavior of droplet impingement is one the most important processes spray cooling. Although refrigerants with a low boiling point have been widely used in cooling, their high volatility makes it difficult to generate stable under atmospheric pressure, and thus rarely reported. Therefore, great significance study refrigerant fill relevant research gaps. In this paper, an experimental...

• Advanced thermal management technologies for motors in electric cars are reviewed. Air and liquid cooling methods stator, winding rotor were critically examined. Possible to enhance the heat conduction thoroughly evaluated. Pros cons of current studies presented, with suggestions future work. The development has well been regarded as a major solution tackling challenges carbon-neutrality face...

Femoroacetabular impingement is typically described as occurring due to a conflict between the femoral head-neck junction and acetabular rim. A prior case report described an open decompression of the anterior inferior iliac spine (AIIS) due to impingement against the proximal femur. AIIS impingement may be developmental or the result of a prior AIIS avulsion or pelvic osteotomy. We describe 3 ...

This update examines recent articles and evidence for the role of ultrasound in the diagnosis and management of shoulder impingement syndromes and emphasizes its principal application in evaluation for external impingement. Shoulder ultrasound is commonly used as the initial investigation for patients with shoulder pain and suspected impingement. This is due to the high resolution of current ul...