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The Research to Hydrocyclone Desander of Sand Removing Based on Crude Oil Ding Fenga, Xiaofei Chang, Xianyong Zhang, Shouyong Li, Chao Ruan, Yu Xie School of Mechanical Engineering, Yangtze University, Jingzhou, Hubei, 434023, China afengd@yangtzeu.edu.cn, fengd0861@yahoo.com Keywords: Hydrocyclone CFD modeling Offshore platform Crude oil Abstract.
Separation Performance of separation many factors, including fluid in the particle size, density and concentration, run-time capacity and inlet pressure and the separator structure.
In pace with rapid development of computer hardware and software technology recently, the use of computational fluid dynamics (CFD) flow properties of engineering technical analysis has become a development[1-9]. 2.
The three-axis cross-section of cyclone position 3.2 STATIC FIELD The pressure distribution of hydrocyclone desander has direct affect on the classification efficiency, pressure loss also affects the sizing of the feed pump power and energy consumption, but also determines the static pressure within the axial and radial material flow, so pressure distribution is also an important parameter of the hydrocyclone desander fluid flow.
REFERENCES [1] SU Fazhang; SHEN JIAN-Feng; HAN Wei; LI Rennian; LI Qifei; LI De-shun (College of Fluid Power and Control; Lanzhou Univ.of Tech.; Lanzhou 730050; China); Performance prediction and amending design of sediment separator for drip irrigation system[J], Journal of Lanzhou University of Technology,2008, 34 (6): 51-54 [2] DONG Yong; LI Wenying; WANG Huaifa(Taiyuan University of Technology; Taiyuan 030024; China); Numerical Simulation Study of Bi-phase Flow in the Solid-liquid Separation Cyclone , Colliery Mechanical & Electrical Technology, 2009(3): 21-23

Moisture and heat commonly encountered in the service environment of nuclear plants have been considered major factors in determining the long-term reliability of adhesively bonding characteristics.
In response to the effects of water and heat in polymers, the thermal properties and mechanical properties including tensile strength, elastic moduli, and the fracture toughness can be significantly affected.
In the process, mechanical property of solid medium affects not only wave polarization but also phase in the medium after refraction.
In this arrangement, the amplitude and time-of-flight (TOF) of each wave packet (conversion mode) depend upon a relative variation of material property.
Comparing to the case of metal, it is quite large and implies that material property has been changed throughout the aging process.

PPS/metal composite materials preparation and friction performance Luo Zhigao1,a, Zhao Bing2,b, Li Jin3,c, Xu Jianwei4,d 1,2,3,4 School of Mechanical Engineering, Jiangsu university, Zhenjiang, Jiangsu,P.R China alzg3359@163.com, bzblovxx@163.com, clijin8703@163.com, d jianweixu88@163.com Keywords: Shot peening; PPS; Friction performance; Bond strength Abstract.
The results showed: the composite material has excellent tribological properties, after the shot peening coarsening in the metal matrix surface can well improve the binding force between plastic layer and metal matrix, the thickness of plastic layer has a certain effect to bond strength, the maximum bond strength was obtained when the thickness of 1.5 mm.
Introduction PPS/metal composites has set the characteristics of metal and polymer, also has the other excellent properties [1].
This paper studied the composite material’s friction and wear performance at room temperature, wear mechanism, the factors affect the performance of the bond strength. 1.
When the plastic work layer is thicker, the stress concentration factor will be smaller.

The geometry of such jets is an important factor for fluidic jet determination.
There is a great difference in mixing properties of normal and fluidic jets, which as illustrated in Fig. 1.
Different geometrical factors such as the jet nozzle exit width, feedback channel width, oscillator depth, and the oscillating chamber shape can affect the performance of fluidic nozzles.
This is because of the fact that by removing the outer nozzle, the factor creating fluidic self-excited flow has been eliminated.
The flow entrainment ratio is less than one in the self-excited machines and it is more than one in mechanical excited jet.

Hot and wet conditions have been recognized as the major factors that affect the compressive strength of composites through a wide range of chemical and physical phenomena.
The effects of moisture and temperature on the reduction of the mechanical properties of composites were studied by many researchers.
In polymer composite, it is known that at high temperature and moisture concentration, it has a considerable degradation of the matrix that reduces the mechanical characteristic of the laminate and the strength failure of material.
Then, Pritchard and Speake have consisted in predicting the change in glass-fiber/polyester laminate properties by using water absorption results [2].
The comparison between the experimental result and prediction of the compressive strength with different environment conditions Environment conditions Experimental result (MPa) Predicted result (MPa) %Difference Microbuckling model Kinking model Combined model Microbuckling model Kinking model Combined model 25℃ dry 1526 1029 1162 1411 32.6 23.9 7.5 25℃ wet 1410 948 1112 1349 32.8 21.1 4.3 130℃ dry 1162 883 891 1140 24.0 23.3 1.9 Summary A fully analysis was developed based on microscopic observations and micro-mechanical model.

Therefore, it is necessary to study the compressive properties of GHPFRCC.
This procedure examines the relationship between variables by focusing on those interactions that are thought to affect the functional characteristics under study.
Conclusions In this study, the uniaxial compressive tests of GHPFRCC are conducted and such factors as water-binder ratio, sand-binder ratio, PVA fiber content, and fly ash replacement rate and water reducing agent content are considered.
Wu, Taguchi methods for robust design, American Society of Mechanical Engineers Press, U.
Xu, Uniaxial compressive properties of ultra high toughness cementitious composite, Journal of Wuhan University of Technology-Material. 26(2011) 762-769.

The region that exist widmanstatten microstructure is located in heat-affected zone where the threaded bolt and base up cover-plate connected by welding.
The mechanical property of widmanstatten is worse than coarse crystal grain, the impact toughness is extraordinary low, and it is also very brittle and can easily form micro cracking.
In terms of mechanical connection, generally welding and threaded bolt won’t use at the same time.
In order to positioning conveniently, some manufacturing enterprise fix threaded bolts and cover-plate by point welding, just as the case, welding of region that threaded bolts cross the cover-plate result in the change of threaded bolts metallographic structure of heat-affected zone, mechanical properties deteriorate, finally lead to threaded bolts breaking off.
Periodic checking must carefully examined maintenance record, because crane maintenance is not obligation, maintenance quality of enterprise that use cranes is the key factor of ensure crane machinery running safety.

The energy form of laser beam is gaussian heat source, which possesses a unequal property in energetic distribution.
The microhardness of heat affected zone reached HV730 because of the existence of martensite.
Fig. 4 also shows that the thickness of laser cladding coatings and heat affected zone are about 900 μm and 800 μm, respectively.
Structure, Processing, Properties, and Selection, Fifth Ed., Publishing House of Electronics Industry, BeiJing (2007)
Zheng, Mechanical Engineering Materials, National Defense Industry, BeiJing (2007)

Because of multilayer material physical properties mismatch, oxidation, interface roughness, creep stress and so on, the coatings system is easy to produce cracks, expand and link near the interface of coating during thermal cycling.
The properties of the materials are temperature dependent as listed in literature [5] .
In this paper, mainly consider the crack tip stress field of complex thermal cycle load, heat transfer and the shape factor.
When model is containing crack, residual stress of the crack tip affected by the temperature is also low.
It is less affected TBC layer.

In the use of algorithm, we choose the digital guidance algorithm, to provide a kind of mechanical modeling and simulation layout algorithm based on force directed algorithm, its essence is the node as a particle of topology, which can be the establishment of a mechanical relationship in each particle [5].
Otherwise, because the tension between the nodes or mutual repulsions cause nodes mutually mixed together, affecting the visualization of the entire system.
Therefore, according to the mechanical relationship, the defined the mapping formula is as follows:
(3) In the construction of network, random network and scale-free network have the huge difference in mathematical properties, and the degree distribution is shown in Figure 2.
Second stage: according to the introduced digital oriented mechanical algorithm, we can carry out iterative computation, until it meets the convergence conditions.