搜索结果: 1-15 共查到“工学 pipes”相关记录27条 . 查询时间(0.062 秒)
Heat Transfer Enhancement of Horizontal Oscillating Heat Pipes With Micro-/Nanostructured Surface
oscillating heat pipes (OHPs) micro-/nanostructured surface horizontal heating direction
2021/7/8
For oscillating heat pipes (OHPs) with low turn number (<9) positioned in the horizontal direction, the working fluid could not easily flow back to the evaporator due to the absence of gravity. Based ...
华南理工大学流体力学与传热课件chapter5 Incompressible flow in pipes and channels
华南理工大学 流体力学 传热 课件 chapter5 Incompressible flow pipes channels
2018/3/22
华南理工大学流体力学与传热课件chapter5 Incompressible flow in pipes and channels。
RESEARCH OF SEISMIC DAMAGE FOR NETWORK OF GAS PIPES BASED ON GIS
GIS Earthquakes Predictive modeling Networks
2015/2/5
The discussion in this paper is prediction of seismic damage for underground gas pipeline based on GIS, and the
reliability of network of gas pipes is studied. A set of methods which are based on bur...
Imagine if every time you filled your car with gas, a few gallons didn’t make it into the tank and instead spilled onto the ground. That’s essentially what happens every day along the aging system of ...
华南理工大学流体力学与传热课件CHAPTER5 Incompressible flow in pipes and channels
华南理工大学 流体力学与传热 课件 CHAPTER5 Incompressible flow in pipes and channels
2014/7/25
华南理工大学流体力学与传热课件CHAPTER5 Incompressible flow in pipes and channels。
Nutrient-Induced Growth of Coliform and HPC Bacteria in Drinking-Water Pipes
Coliform HPC Bacteria Nutrient Drinking-Water Pipes Biofilm Bacterial Growth
2012/6/11
We conducted a study on a model drinking water distribution system to evaluate the impact of nutrient in the form of sodium acetate on the growth and survival of coliform and heterotrophic plate count...
Unsteady mixed flows in non uniform closed water pipes: a Full Kinetic Appraoch
Mixed flows in closed water pipes drying and flooding flows kinetic interpretation of conservation laws kinetic scheme with reflections
2011/7/7
Abstract: We recall the \PFS} model constructed for the modeling of unsteady mixed flows in closed water pipes where transition points between the free surface and pressurized flow are treated as a fr...
A mathematical model for unsteady mixed flows in closed water pipes
Shallow water equations, unsteady mixed flows, free surface flows, pressurized flows, curvilinear transformation, asymptotic analysis.
2011/6/10
We present the formal derivation of a new unidirectional model for unsteady mixed flows in non uniform closed water pipe. In the case of free surface incompressible flows, the FS-model is formally obt...
Critical flow speeds of pipes conveying fluid using the generalized differential quadrature method
GDQ method stability flutter
2010/12/30
The aim of this study is to clarify the discrepancy regarding the critical flow speed of straight pipes conveying fluids that appears to be present in the literature by using the Generalized Different...
空气流速对温室地下蓄热系统湿热传递影响试验（Influence of Air Velocity in Heat Exchanging Pipes to Heat Change and Water Vapor Transformation for Underground Heat Storage System in Greenhouse）
双层覆盖温室 地下蓄热系统 流速
2010/12/28
为确定双层覆盖温室地下蓄热系统换热管道空气流速对蓄热量和水蒸气迁移的影响，建立合理的运行模式，测试了该系统以0.6～2.8m/s的空气流速蓄热时换热管道进、出口空气温度和相对湿度、地坪温度、室外温度，计算了换热管道进出口处空气含湿量与焓及蓄热功率。结果表明，在冬季白昼晴朗时，系统分别以0.6、1.0、1.5、2.0、2.5、2.8m/s的空气流速进行蓄热，温室内热空气流经换热管道焓值明显降低，...
Pose Planning for the Endeffector of Robot in the Welding of Intersecting Pipes
intersecting pipes bisecting angle welding quality
2010/12/13
Allposition robots are widely applied in the welding of complicated parts. Welding of intersecting pipes is one of the most typical tasks. The welding seam is a complicated saddlelike space curve, whi...
Purpose: The purpose of this paper was to present the results of a special abrasion test of poly(vinyl chloride) and polypropylene filled with calcium carbonate pipes. Abrasion test’s results for pipe...
Lateral extrusion of tailor welded aluminum alloy pipes with a lost core of low temperature melting alloy
Tube forming Tailored blank Lateral extrusion
2009/12/14
Purpose: In this paper, the authors employ tailor welded aluminum alloy pipes for lateral extrusion process with a lost core to perform a hollow light-weight-part.
Design/methodology/approach: The pi...
Creep damage mechanisms in gas pipes made of high density polyethylene
Engineering polymers Creep-resistance Mechanical properties
2009/12/3
Purpose: The purpose of this article is to present results of creep damage mechanisms in gas pipes made of high density polyethylene [HDPE]. High density polyethylene has been widely used in the pipin...
Variation of Average Velocity Through the Transition Pipes at Cross Sections Perpendicular to the Axis
Transition Pipes Area and Velocity Variation Linear Transition
2009/10/15
Transition ducts are used in water channel and wind tunnels, turbomachinery, especially aircraft air intakes and power station ducting systems. Due to significant energy losses, flow through these duc...