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Influence of Vanes and Blades on Ingress in Axial Rim Seal for Turbine Stages
Hot gas ingestion refers to the phenomenon of mainstream hot gas flowing into the space cavity of a turbine wheel. Previous studies have found that...
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Effects of Sealing Flow Supply Configuration with Holes on Sealing Effectiveness of Turbine Rim Seal
This paper proposes a new-designed rim seal configuration with sealing holes based on the conventional radial rim seal, and presents a numerical...
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Influence of Secondary Sealing Flow on Performance of Turbine Axial Rim Seals
Purge flow is of great importance in cooling turbine disks and sealing rotor-stator disc cavity to reduce hot gas ingestion in gas turbines. The...
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Effects of Ribbed-Cavity Tip on the Blade Tip Aerothermal Performance in a High Pressure Turbine Stage
For unshrouded blade tip, the high-temperature gas flows through the tip clearance by force of the lateral pressure difference. Thereby, the blade...
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Wide-field coherent anti-Stokes Raman scattering microscopy using random illuminations
Coherent Raman microscopy is the method of choice for the label-free, real-time characterization of the chemical composition in biomedical samples....
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Effects of Squealer Geometry of Turbine Blade Tip on the Tip-Leakage Flow and Loss
The effective control of the tip-leakage flow and loss is of great significance to improve the aerodynamic performance of the turbine. In this paper,...
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Application of Phase-Locked PIV Technique to the Measurements of Flow Field in a Turbine Stage
For the purpose of improving turbine efficiency, a detailed investigation of flow field near rim seal region in the main annulus is absolutely...
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Performance Analysis of Inter-Stage Leakage Flows at Rotating Conditions in an Axial Compressor
For the compressor with shrouded stator blades, the stator well is a rotor-stator space between the rotating drum and the stationary shroud. Due to...
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Of Good and Bad Drops: Fluid Dynamics of Wine
In the upcoming experiments, we want to deal with the behavior of wine as a liquid. The scientific branch of physics responsible for this is fluid...
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Finished Drinking? Experimenting with Residual Alcohol
The last eight experiments are our offer for a “physically supervised clean-up”. You will hardly read that it is time from the “wine clock”, but this...
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Studying the aging of Laponite suspensions using extensional rheology
The effect of aging on the break-up dynamics of Laponite suspensions was studied in an extensional geometry. It was found that samples of increased...
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Effect of Squealer Tip with Deep Scale Depth on the Aero-thermodynamic Characteristics of Tip Leakage Flow
In this paper, the aero-thermal performance of squealer tips with deep-scale depth is numerically investigated in an axial flow turbine, which is...
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Experimental and Numerical Analysis of Cavity/Mean-Flow Interaction in Low Pressure Axial Flow Turbines
The increasing performance of modern aeroengines led the research towards the optimization of machine components not deeply analyzed in the past. In...
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Effects of Various Geometric Features on the Performance of a 7:1 Pressure Ratio Deeply Scalloped and Split Radial Turbine in a Gas Turbine Engine
A 2 MW gas turbine engine has been developed for the distributed power market. This engine features a 7:1 pressure ratio radial inflow turbine. In...
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Mars 2020 Mission Overview
The Mars 2020 mission will seek the signs of ancient life on Mars and will identify, prepare, document, and cache a set of samples for possible...
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Landing Site
Landing site selection activities got underway in earnest after the issuing of the Announcement of Opportunity for the Mars 2020 Investigation and...
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The Dragon has Landed
On May 31, 2012, a cargo-laden SpaceX Dragon parachuted back to Earth after a nearly flawless demonstration mission to the International Space...
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Outside the Spacecraft
The first female to conduct an Extravehicular Activity (EVA, or spacewalk) was the Soviet Union’s Svetlana Savitskaya, who spent three hours and 33...
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Design Guidance, Do’s and Dont’s, and Optimized Solutions
Universal control of noise and vibration is still somewhat of a novelty. Between existing and pending noise and vibration regulations, it is one of...
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Buzzing Lips: Sound Generation in Brass Instruments
This chapter deals with the vibrating lips as a sound source: this is a defining feature of all labrosones (brass instruments). The main processes...