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Attrition of material during cutter suction dredging and pipeline transport: a summary
Attrition material during cutter suction dredging pipeline transport a summary
2013/9/13
In the dredging industry, it is advantageous to have advanced knowledge of the expected particle size distribution (PSD) of material that has been subject to dredging processes. During dredging, the r...
Improving the Predictive Capability of Popular SWCCs by Incorporating Maximum Possible Suction
Unsaturated Soils Soil Water Characteristic Curve Permeability Function
2013/3/7
Soil-water characteristic curve (SWCC) that represents the relationship between the soil moisture and matric suction is one of the important constitutive models required for numerical modeling of unsa...
A Flexible Model for Moisture-Suction Relationship for Unsaturated Soils and Its Application
Soil-Water Characteristic Curve Unsaturated Soils SWCC for Low Degree of Saturation
2013/3/7
The mathematical equation for the moisture-suction relationship also known as soil water characteristic curve (SWCC) is one of the constitutive relations necessary for the computational modeling of de...
番茄采摘机器人真空吸盘装置设计与试验（Design and Test of the Vacuum Suction Device for Tomato Harvesting Robot）
番茄 采摘机器人 真空吸盘装置 设计
2010/12/29
为实现番茄采摘机器人作业时将目标果实从果束中分离，设计了以微型静音空气压缩机和集成式真空发生器为主体的真空吸盘装置，并依据供气压力-负压关系、吸盘拉脱力和真空吸着响应时间测定结果，确定了其控制策略。试验表明，真空吸盘装置平均单次作业的时间和空气消耗量分别为1.5s和0.6L，拉动果实实现35mm水平位移的成功率达92%，空气压缩机功率可以满足采摘效率360个/h的需要。
气吸滚筒式棉花精量穴播器排种性能试验（Sowing-performance of Air-suction Cylindrical Cotton Precision Dibbler）
棉种 穴播器 气吸滚筒 吸孔线速度
2010/12/28
针对气吸滚筒式精量穴播器作业过程中能耗大、排种性能不稳定等问题，以主要影响因素:取种盘吸孔线速度和充种负压为研究对象进行正交试验、回归分析，确定各因素对排种性能的影响规律及较优工作参数组合。结果表明：充种相对压力-4.5 kPa、取种盘吸孔线速度0.38 m/s时为较优作业参数组合，此条件下穴播器的单粒指数为98.67%、综合评价指数为99.00%、重播指数为0.67%、漏播指数为0.67%，满足...
湍流模型在双吸离心泵数值模拟中的适用性分析（Applicability of Turbulence Models in Numerical Simulation of Double Suction Centrifugal Pump）
离心泵 湍流模型 CFD 数值模拟
2010/12/28
以双吸离心泵为研究对象，在Fluent软件中采用标准k-ε模型、RNG k-ε模型、Realizable k-ε模型和雷诺应力模型4种湍流模型在相同网格条件下进行三维、稳态数值模拟，计算其在不同工况下的扬程及水力效率；然后以RNG k-ε模型计算结果作为初值，用大涡模拟方法进行三维、非稳态数值模拟，计算叶轮旋转一周的平均扬程及平均水力效率，与真机数据进行对比分析。计算结果表明：Fluent软件在...
自吸网式过滤器过滤时间与自清洗时间变化规律分析（Analysis of Filtering Time and Sewage Time for Automatic Suction Screen Filter）
微灌 过滤器 过滤时间
2010/12/28
微灌用过滤器是保证整个微灌系统正常运行的核心过滤设备，开发具有自清洗功能的过滤设备则是研究的重点。在对自吸网式过滤器进行水力性能试验的基础上，分析了自吸网式过滤器过滤时间的变化规律，表明过滤时间的变化并非呈线性规律；分析了自清洗时间的影响因素，指出自清洗时间并不是恒定不变的，而是在其他参数固定时与进水含沙量S0呈反比关系。
Boundary layer flow over a moving surface in a nanofluid with suction or injection
Nanofluid Moving plate Boundary layer Suction/injection Dual solutions
2012/2/24
An analysis is performed to study the heat transfer characteristics of steady two-dimensional boundary layer flow past a moving permeable flat plate in a nanofluid. The effects of uniform suction and ...
How to surprise a copepod: Strike kinematics reduce hydrodynamic disturbance and increase stealth of suction-feeding fish
Strike kinematics reduce hydrodynamic disturbance increase stealth suction-feeding fish
2014/4/17
To capture prey with suction, fish must get sufficiently close to their prey to allow the suction flow to overwhelm the prey and draw it into the mouth. Both swimming towards the prey and suction flow...
Chemical reaction, heat and mass transfer on nonlinear MHD boundary layer flow through a vertical porous surface in the presence of suction
Buoyancy effects Chemical reaction
2010/9/17
The effect of chemical reaction on the forced and free convection boundary layer that flows in a semi-infinite expanse of an electrically conducting viscous incompressible fluid past vertical porous p...
Slow Flow of The Reiner-Rivlin Fluid in a Coverging or Diverging Channel with Suction and Injection
Diverging or converging channels porous media viscoelastic fluid intersecting planes
2009/10/14
Two dimensional slow flow of an viscoinelastic fluid in a converging or diverging channel with porous walls has been studied. It is assumed that, the magnitude of the velocity at the center line of th...
Relationship between Methylene Blue Value,Initial Soil Suction and Swell Percent of Expansive Soils
Expansive soil Methylene blue value Psychrometer Swell percent Soil suction
2009/10/12
The purpose of this study was to investigate the relationship between methylene blue value, initial soil suction and the swell percentage of expansive soil samples. In this study, commercially process...
On the Effectiveness of Uniform Suction and Injection on Steady Rotating Disk Flow in Porous Medium with Heat Transfer
Rotating disk flow Heat Transfer Porous medium Suction or Injection
2009/10/10
The steady flow of an incompressible viscous fluid above an in nite rotating porous disk in a porous medium is studied with heat transfer. A uniform injection or suction is applied through the surface...
Time Varying Hydromagnetic Couette Flow with Heat Transfer of a Dusty Fluid in the Presence of Uniform Suction and Injection Considering the Hall Effect
Two phase flow Dusty fluids Heat transfer Hydromagnetic flow
2009/10/9
The time varying Couette flow with heat transfer of a dusty viscous incompressible electrically conducting fluid under the influence of a constant pressure gradient is studied without neglecting the H...
Investigation of Non-Newtonian Micropolar Fluid Flow with Uniform Suction/Blowing and Heat Generation
Stagnation point flow Stretching sheet Heat generation Finite difference method
2009/10/9
The steady laminar flow with heat generation of an incompressible non-Newtonian micropolar fluid impinging on a porous flat plate is investigated. A uniform suction or blowing is applied normal to the...