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Flow pattern in falling film on a horizontal tube bundle. [3] Thickness of liquid falling films around horizontal tubes is influenced by several parameters including: tube diameter, intertube spacing, circumferential angle, tube location, film flow rate, film feeding system, tube wall temperature, operating pressure, and falling liquid properties, [4].
The results showed that the main factors influenced the distribution characteristics of the film's thickness are; i- circumferential angle, ii- intertube spacing and iii- the film's Reynolds number, [12].
Properties of the working fluid (water) at ambient temperature.
To validate the present numerical results, the thickness of steady falling liquid film around the second tube is computationally measured at circumferential angle range from 15⁰ to 165⁰ with intertube spacing of 10 mm, 16 mm, 33 mm and 40 mm and with constant value for flow rate (Reynolds number of 574), ambient conditions and constatnt fluid properties.
Liquid flow rate (Re) is one of the influenced paramters that affect the distribution of film thickness around the tubes in evaporators.

On the simulation platform, the heat transfer performance and dehydration properties of cooler are studied on different pressure conditions.
Therefore, with the establishment of the gas-cooler simulation model by the mechanism analysis, the heat transfer performance and dehydration properties of cooler are studied on different pressure conditions, which provides reference for unit control system and operation of oxy-fuel pulverized coal fired boiler.
When the inlet pressure is less than 0.9MPa, the inlet pressure of flue gas is the main factor affecting the relative humidity, so the overall of water separation is upward trend.
When the inlet pressure is less than 0.9MPa, the outlet temperature of flue gas is the main factor affecting the relative humidity, so the overall of water separation is downward trend.
Direct calculation of flue gas properties [J].Journal of Suzhou Institute of Silk Textile Technology, 1999, 19(3): 32-36.

Simulation and Experiment for the Ogive Affecting PELE Broken Finite-Thickness Reinforced Concrete Targets Xiao-jun YE1,a, Zhong-hua Du2,b, Jun Chen1,c, Ying-Jun Cao3 1New Star Research Inistitute of Applied Technology, Hefei, 230031, P.
China; 2 School of Mechanical Engineering, NJUST, Nanjing, 210094, P.
Now, the research about PELE mainly focuses on the penetration of thin metal target and its influence factors [1]-[4], and it remains an active research field in PELE broken thin finite-thickness RC targets RC is a widely kind of protective structural material.
The break of concrete material is a very complex problem, it is closely related to the RC material properties, different form the penetration of metal plate.
We use Lagrange arithmetic in the numerical simulations. it can describe the mechanical dynamic behavior of PELE broken RC, and the calculation of the stability.

At lower temperature, recrystallization reduces or vanishes at temperature ranging from 900 to 940 ℃ due to thermodynamics factors.
The recent researche finds that final microstructure and mechanical properties depend heavily on the process parameters such as temperature, strain rate and strain [1].
The designed maximum service temperature is up to 550℃, and moreover this alloy has good balance of mechanical properties.
This is because the growth of recrystallization grain needs the diffusion of atom, which is heavily affected by temperature.
At lower temperature, recrystallizations reduce or vanish at temperatures from 900 to 940 ℃, due to thermodynamics factors.

Despite PDMS’s great mechanical properties, PDMS possess relatively low dielectric permittivity compared to other elastomers.
Both fillers can affect the mechanical and electrical properties of DE.
This project studied the capability of bacterial cellulose (BC) to overcome the low permittivity of the PDMS without severely affecting other electro-mechanical properties of DE.
Many factors can affect the electrical breakdown of the elastomer such as the elastomer structure and the geometry [37], [38].
Introducing a high amount of hard filler does increase Young’s modulus linearly but the result can also affect by some factors such as inhomogeneous filler distribution in the polymer matrix.

The thermal properties of traditional fluids may be enhanced by nanoparticles such as metals, oxides, carbides, or carbon nanotubes in base fluid, called nanofluids.
In [33] This study apply Taguchi approach to optimize the affecting parameters of the photovoltaic thermal system and it assessed the analysis of variance (ANOVA), and an orthogonal table was created to examine how each control factor affected the efficiency of heat storage and power generation.
The thermo physical properties of the fluids are independent of the temperature. 3.
The optical properties of the material remain constant. 5.
Affecting the Variable for Optimization.

Vehicle wheels have to be considered as a safety-related component and the essential factors in wheel applications are the fatigue strength and the impact strength [8].
Aluminium alloy 6061-T6 has superior mechanical properties such as a high strength/weight ratio, corrosion resistant, high thermal conductivity and excellent weld ability and deformability.
The properties of the specimens and the striker are tabulated in Table 1, for which the values were obtained from the actual laboratory tensile test performed by the author [12,13].
Table 1 Material properties for striker, Charpy specimen 1 and Charpy specimen 2 Comp.
J. of Mechanical and Material Engineering 6 (2011) 92-101

The specimens are the engineering steel (SM490B) and their chemical composition and the mechanical properties are shown in Table 1 and 2.
Mechanical properties of SM490B Composition (weight %) Material C Si Mn P S SM490B 0.18 0.55 1.60 0.035 0.035 Fig. 1.
A model for crack growth retardation Determination of overload effect factor.
r p a a* r po Overload affected plastic zone Instantaneous plastic zone S S Fig. 4.
C is an empirical constant affected by the overload ratio.

The basic physical and mechanical properties are investigated and the optimal compositions of fine concrete are developed.
Table 2 presents the properties of Portland cement by mechanical stirring it with a crushed ash-slag mixture.
The reasons for the change in the strength of these cements are due to the same factors as that of cements using hydro-removal ash.
Applying the correction factors ASTM 42-57 or BS 1881 : 1952, it is possible to recalculate the strength that would be obtained at h/d=2.
Physical and mechanical properties of activated cement-ash binders [Text] / L.

Their mechanical properties are shown in the table 3.
Table 3 Mechanical properties[5] Type [MPa] [MPa] (%) (%) HB 34CrNi3MoA 735 880 15 40 270~315 AISl4340 880 980 15 45 293~352 According to the hydrodynamic theory, the pressure of liquid in the cylinder is uniform distribution, so the boundary conditions can be set as follows: (1) the body: fix support under the two outer thread surface. (2) Part A: 400MPa pressure load affects on the wall A surfaces in a high pressure trip. (3) Part B is divided into three parts, the pressure of these three parts is 400MPa, and however, the force time of the three parts is 0.2, 0.4 and 0.6 seconds. (4) Part C is no loading.
There are many factors affecting the S-N curve: the ductility, the processing technology of materials and geometry information.
So load type chooses the ratio which circulating features r=0, and the fatigue strength factor is set 0.8.
Peterson: Stress Concentration Design Factors. ( John Wiley & Sons New York 1953)