搜索结果: 1-11 共查到“gas flow”相关记录11条 . 查询时间(0.172 秒)
Hydrological influences on long-term gas flow trends at locations in the Vogtland/NW Bohemian seismic region (German-Czech border)
seismo-hydrology gas flow groundwater level mineral springs mofettes
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2015/9/2
One of the typical methods for the identification of seismo-hydrological effects is to monitor changes in the free
gas flow throughout springs or mofettes. For several years, the gas flow regime of m...
Real-time numerical simulations and experimental research for the propagation characteristics of shock waves and gas flow during coal and gas outburst
Coal and gas outburst Shock wave and gas flow Propagation characteristics Cross roadway
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2012/3/31
When coal and gas outburst occurs, high-speed gas flow and air shock wave with high kinetic energy could be created. In this paper, the formation process of outburst shock waves and gas flow has been ...
Measurement of the gas-flow reduction factor of the KATRIN DPS2-F differential pumping section
gas flow RGA residual gas analyzer vacuum measurement free molecular flow turbo-molecular gas flow RGA residual gas analyzer vacuum measurement free molecular flow turbo-molecular
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2011/8/1
Abstract: We determined the gas-flow reduction factor of the second forward Differential Pumping Section (DPS2-F) for the KATRIN experiment using a dedicated vacuum-measurement setup and by detailed m...
$L^\infty$ solutions for a model of polytropic gas flow with diffusive entropy
Polytropic gas di usive entropy
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2010/12/1
We establish the global existence of L1 solutions for a model of polytropic gas ow with di usive entropy. The result is obtained by showing the convergence of a class of nite di erence schemes, whic...
测量排气流量的内锥流量计数值模拟与实验（Numerical and Experimental Study on V-cone Flowmeter for the Vehicle Exhaust Gas Flow Measurement）
内锥流量计 流量测量 碳平衡法
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2009/8/11
为了保证碳平衡法测量实车油耗的精度，对油耗测量系统中的内锥流量计进行了特性研究。用Fluent软件对内锥流量计进行了数值模拟，研究不同等效直径比、前后锥角、有无连接支撑杆等几何参数以及雷诺数对内锥流量计永久压力损失和流出系数的影响规律；将设计的两种内锥流量计与标准临界文丘里管组进行了对比验证实验，并以文丘里管实测值为参考值，得出了计算流出系数的拟合公式，将此拟合公式作为流量计算模型。结果表明数值模...
Volatile Dense Chemical Liquids in Groundwaters Can Produce Slowly Bubbling Gas Flow
Volatile Dense Chemical Liquids Groundwaters Bubbling Gas
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2009/12/16
The successful cleanup of DNAPL-contaminated sites depends on our ability to understand the processes that transfer the contamination from the source of a spill to the surrounding groundwater. Until r...
Effect of Sudden Increase of Solid Feed Rate on the Arching in Hoppers Connected to a Standpipe with Interstitial Gas Flow
moving-bed standpipe width of arching model
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2009/4/22
In this paper, a model is proposed for the prediction of the width of arching in hoppers resulted from sudden changes in solid feed rates. Such changes in solid feed rate usually come from the colli...
The behavior of gas flow ejected from two vertical nozzles in a fluidized bed
momentum distribution Pitot-Tube bubble coalescence
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2009/3/25
The behavior of gas flow ejected from two vertical nozzles in a fluidized bed.
Gas flow through a multilayer ceramic mould in lost wax foundry process
Ceramic mould Permeability Investment casting
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2011/3/30
The paper deals with the issues of permeability testing of ceramic moulds used in lost wax foundry process. The main issue in the testing is to provide proper specimens of ceramic moulds (CM). The mou...
Gas flow through a multilayer ceramic mould in lost wax foundry process
Ceramic mould Permeability Investment casting
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2011/3/30
The paper deals with the issues of permeability testing of ceramic moulds used in lost wax foundry process. The main issue in the testing is to provide proper specimens of ceramic moulds (CM). The mou...
Hydrodynamic Model for the Plasma-Gas Flow in a Cutting Torch Nozzle
Hydrodynamic Model the Plasma-Gas Flow a Cutting Torch Nozzle
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2010/10/26
We present a simple hydrodynamic model to obtain the profiles of the relevant physical quantities along a nozzle of arbitrary cross-section in a cutting torch. The model uses a two-zone approximation ...