Results 21 to 30 of about 41,220 (167)
Shock Formation in Overexpanded Tip Leakage Flow [PDF]
Volume 1: Turbomachinery, 1992 Shock formation due to overexpansion of supersonic flow at the inlet to the tip clearance gap of a turbomachine has been studied. The flow was modelled on a water table using a sharp-edged rectangular channel. The flow exhibited an oblique hydraulic jump starting on the channel sidewall near the channel entrance.
J. Moore, K. M. Elward
openaire +1 more source
A novel approach for suppressing leakage flow through turbine blade tip gaps
Propulsion and Power Research, 2022 Tip clearance leakage flow of the turbine bade is an important factor limiting the augment of the high pressure turbine efficiency, which should be suppressed utilizing certain methods.
Tianyi Wang, Yimin Xuan
doaj +1 more source
Oscillatory Tip Leakage Flows and Stability Enhancement in Axial Compressors
International Journal of Rotating Machinery, 2018 Rotating stall axial compressor is a difficult research field full of controversy. Over the recent decades, the unsteady tip leakage flows had been discovered and confirmed by several research groups independently.
Feng Lin, Jingyi Chen
doaj +1 more source
Unsteady Structure of Compressor Tip Leakage Flows
Volume 10A: Turbomachinery — Axial Flow Fan and Compressor Aerodynamics, 2022 Abstract Direct numerical simulations (DNS) are performed of a cantilevered stator blade to identify the unsteady and turbulent flow structure within compressor tip flows. The simulations were performed with clearances of 1.6 and 3.2 percent of chord.
Maynard, Joshua M +3 more
openaire +1 more source
Tip Leakage Flow in Linear Compressor Cascade [PDF]
Journal of Turbomachinery, 1993 Tip leakage flow in a linear compressor cascade of NACA 65-1810 profiles is investigated, for tip clearance levels of 1.0, 2.0, and 3.25 percent of chord at design and off-design flow conditions. Velocity and pressure data are collected from three transverse sections inside tip clearance and sixteen sections within flow passage.
S. Kang, C. Hirsch
openaire +1 more source
AIP Advances, 2023 This paper aims at the numerical analysis of the influence of tip clearance size on the pre-stall flow features of a transonic high-speed compressor by applying the throttle model at the exit of the compressor computational domain.
Khalid Kamal Abdelbagi
doaj +1 more source
Nihon Kikai Gakkai ronbunshu, 2016 A tip leakage flow is well known to have predominant influence on a loss generation in a compressor. An impeller for a transonic centrifugal compressor is generally composed of the main and the splitter blades to gain the choke flow rate.
Masanao KANEKO, Hoshio TSUJITA
doaj +1 more source
Leakage Flow Characteristics in Blade Tip of Shaft Tubular Pump
Journal of Marine Science and Engineering, 2023 The shaft tubular pump device is widely used in various water diversion projects because of its ultra-low head and large flow characteristics. Due to the tip clearance between the blade and the shroud, it is easy to cause hydraulic mechanical performance
Zhikang Lin +5 more
doaj +1 more source
Applied Sciences, 2022 Semi-open centrifugal pumps are widely used in various fields. However, the tip leakage vortex (TLV) has a malign effect on the impeller flow field.
Bing Qian +5 more
doaj +1 more source
Analysis of hydrofoil tip leakage vortex dynamic characteristics
Advances in Mechanical EngineeringThe clearance exists inevitably between the turbine guide vanes and the fixed wall, and the resulting tip leakage vortex leads to the increase of hydraulic loss.
Yuanyuan Gang +6 more
doaj +1 more source