CFD SIMULATION OF ORIFICE PULSE TUBE REFRIGERATOR

Banjare Y. P. *, Sahoo R. K., Sarangi S. K.
Department of Mechanical Engineering, NIT Rourkela-769008, Orissa




Abstract A commercial Computational fluid dynamics (CFD) software package Fluent 6.1 is used to model the oscillating flow inside a pulse tube cryocooler. In this paper analysis of orifice type pulse tube refrigerator (OPTR) systems operating under a variety of thermal boundary conditions are modeled at different frequencies. The compressor us ....etc

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Introduction
Waterjet Cutting (WJC) is a non-traditional method in which a high velocity jet is used to machine a material. Often it is assisted by abrasives and & is known as Abrasive. Waterjet Cutting (AWJC). The process offers a wide range of advantages. It is omni-directional and enables fully automated 3-D cutting and has unlimited creative potential. The resulting kerf width is small and hence improved yield. Forces involved are minimum and non-crushed edges even on very soft materials. Work hardening is eliminat ....etc

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DESIGN AND FABRICATION OF PULSE TUBE REFRIGERATION SYSTEM

ABSTRACT
Cooling effect at one end of a hollow tube with a pulsating pressure in the inside gas, was first observed by Gifford and Longsworth in early sixties. This marks the inception of one of the most promising cryogenic refrigerators known as 'pulse tube refrigerator' (PTR). Cryogenics is the science of low temperature. Cryogenics refers to the entire phenomenon occurring below -150°C or 123K. Cryogenic engineering involves the design and development of ....etc

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i am final year project college student who need help on the topic active dampers in automobile and i am expected to give a detailed report which will include supporting equations, general analysis and its application and importance in cars. ....etc

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INTRODUCTION
Ethical hacking- also known as penetration testing or intrusion testing or red teaming has become a major concern for businesses and governments.

Companies are worried about the possibility of being hacked and potential customers are worried about maintaining control of personal information.

Necessity of computer security professionals to break into the systems of the organisation.


Ethical hackers employ the same tools and techniques as the intruders.

They neither damage the target systems n ....etc

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hi boss
i wanted a report and ppt on abrasive jet machining
plz can u help me........ ....etc

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Introduction
Waterjet Cutting (WJC) is a non-traditional method in which a high velocity jet is used to machine a material. Often it is assisted by abrasives and & is known as Abrasive. Waterjet Cutting (AWJC). The process offers a wide range of advantages. It is omni-directional and enables fully automated 3-D cutting and has unlimited creative potential. The resulting kerf width is small and hence improved yield. Forces involved are minimum and non-crushed edges even on very soft materials. Work hardening is eliminat ....etc

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ABSTRACT
Diesel Performance Products introduces the Powershot propane injection system for turbo diesel owners who are looking for more power for towing increased mileage and throttle responsiveness out of their vehicles.
With its innovative and patented design and method of propane delivery, this system is unique to other systems on the market and has overcome many of the drawbacks encountered with earlier designed injection systems.
The Powershot is an infinitely variable-stage vapor injection syst ....etc

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SYSTEM DESIGN & DEVOLOPEMENT IN CALCULATION OF RESPONSE TIME FOR AIR BRAKE SYSTEM
INTRODUCTION
COMPONENTS OF AN AIR BRAKE SYSTEM:
Air brake system consists of the following components:
Compressor:
The compressor generates the compressed air for the whole system.
Reservoir:
The compressed air from the compressor is stored in the reservoir.
Unloader Valve:
This maintains pressure in the reservoir at 8bar.When the pressure goes above 8 bar it immediately releases the pressurized air to bring the system to 8-bar press ....etc

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Valves, Instrumentation, and Control
Types of valves
Components of valves
Instrumentation: on-line meters
Process control review
Valves, Instrumentation, and Control Learning Objectives
At the end of this section, you should be able to…
Describe the major types of valves, their operation and characteristics, and draw their standard symbols on a P&ID.
Select an appropriate valve for a specific application.
Identify the function of the major components of a valve.
Select trim and K
List the four most ....etc

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CFD SIMULATION OF ORIFICE PULSE TUBE REFRIGERATOR

Banjare Y. P. *, Sahoo R. K., Sarangi S. K.
Department of Mechanical Engineering, NIT Rourkela-769008, Orissa




Abstract A commercial Computational fluid dynamics (CFD) software package Fluent 6.1 is used to model the oscillating flow inside a pulse tube cryocooler. In this paper analysis of orifice type pulse tube refrigerator (OPTR) systems operating under a variety of thermal boundary conditions are modeled at different frequencies. The compressor us ....etc

[:=Read Full Message Here=:]