17 Result(s)
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Chapter and Conference Paper
Research on Electromagnetic Immunity Test Method for Vehicle Auto Pilot
In this paper, an electromagnetic immunity test method for vehicle auto pilot in EMC chamber is introduced
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Article
Effect of droplet superficial velocity on mixing efficiency in a microchannel
In this study, droplet characteristics including droplet length and formation time, and mixing efficiency in droplets were investigated via the volume of fluid (VOF) method coupled with a user defined scalar (...
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Article
Seal contact performance analysis of soft seals on high-pressure hydrogen charge valves
The charge valve is an important element in the charging port of a high-pressure hydrogen storage cylinder (HP-HSC). It is normally closed after the HP-HSC is filled with hydrogen. If the seal of the charge va...
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Article
A parametric study on unbalanced moment of piston type valve core
In this paper, the piston type valve core and the unbalanced moment on its bottom are studied. To decrease the influence of non-common geometrical factors, a simplified model of the piston type globe valve is ...
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Article
Effect of valve core shapes on cavitation flow through a sleeve regulating valve
Cavitation occurring in a sleeve regulating valve not only increases the energy waste of the whole pi** system but also causes severe and costly damage to the valve body and the pi** system. In this paper,...
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Article
A comprehensive review of cavitation in valves: mechanical heart valves and control valves
Valves are widely used in various working conditions for their flow control functions, and the cavitation inside valves has been investigated owing to its harm to the valve itself and the connecting downstream...
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Article
Research laboratory for Smart Control Valves at Zhejiang University
目前大中型控制阀大多存在结构复杂、驱动能耗 大、反应时间慢、振动噪声大、稳定性差和使用 寿命短等缺点。基于此, 浙江大学相关研究人员 组建了特种控制阀研究室, 致力于提升控制阀的 整体性能和设计水**。
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Article
A numerical investigation of the flow of nanofluids through a micro Tesla valve
In this study, Al2O3-water nanofluids flowing through a micro-scale T45-R type Tesla valve was investigated numerically. Both forward and reverse flows were investigated based on a verified numerical model. The e...
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Article
Hybrid Control Scheme of a Hydraulically Actuated Lower Extremity Exoskeleton for Load-Carrying
In this paper, a lower extremity exoskeleton is developed to help human beings walk and carry heavy loads. The exoskeleton is actuated by a pump-based hydraulic actuation system. The hydraulic actuation system...
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Article
Numerical analysis of flow and cavitation characteristics in a pilot-control globe valve with different valve core displacements
The pilot-control globe valve (PCGV) is a novel globe valve with a piston-type valve core and a small pilot valve. It can utilize a pressure difference to control the state of the main valve by the pilot valve...
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Article
Numerical simulation and structure improvement of double throttling in a high parameter pressure reducing valve
In this paper, a new pressure reducing valve (PRV) with an orifice plate is proposed. The main objective is to explain the mechanisms of pressure reduction and energy conversion in the new PRV. A numerical sim...
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Article
Cleavage of catalytic ally grown carbon nanofibers into hydrophilic segments by oxidation in a mixture of concentrated HNO3-H2SO4 in an autoclave
The catalytically grown carbon nanofibers were treated by a mixture of concentrated nitric aid and sulfuric aid in an autoclave at temperature 333, 363 and 423 K. It was found that the samples treated at 363 K...
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Article
Simultaneous approach for simulation of a high-temperature gas-cooled reactor
The simulation of a high-temperature gas-cooled reactor pebble-bed module (HTR-PM) plant is discussed. This lumped parameter model has the form of a set differential algebraic equations (DAEs) that include sti...
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Article
Experimental evaluation of the effect of an internal heat exchanger on a transcritical CO2 ejector system
This study presents experimental results focused on a performance comparison of a transcritical CO2 ejector system without an internal heat exchanger (IHX) (EJE-S) to a transcritical CO2 ejector system with an IH...
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Article
Plastic limit load analysis for pressure pipe with incomplete welding defects based on the extended Net Section Collapse Criteria
With von Mises yield criterion, the loading range of Net Section Collapse (NSC) Criteria is extended from combined tension and bending loadings to combined bending, torsion and internal pressure loadings. A ne...
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Article
Experimental investigation of an adjustable ejector for CO2 heat pump water heaters
An adjustable ejector expansion device for a CO2 heat pump water heater (HPWP) is proposed to improve the system performance. It has been designed to investigate experimentally the effects of the motive nozzle th...
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Article
High efficient inverse dynamic calculation approach for a haptic device with pantograph parallel platform
This article presents a novel inverse dynamic calculation approach for a haptic device with pantograph parallel platform. This approach uses vector differential equations in kinematics analysis, hence deriving...
