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Mabrouki [3] have analyzed the interaction between the water jet and elastic-plastic material by CFD software, The former aims to forecast the depth of the water jet penetrating into the material, and the later mainly analyzed the process of the interaction between the water jet and material, and the result has shown that there was an erosion zone on the material, the simulated result is consistent with the experimental result.
Fig.1 Water Jet Nozzle Model Boundary condition and other parameters setting: Inlet boundary condition: velocity inlet condition, the velocity of the two-phase flow at inlet is 900m/s, Outlet boundary condition: pressure outlet condition, the pressure of the two-phase flow at outlet is 101325Pa, Wall: no-slide wall, others' parameters are default, Axis symmetry, The volume ratio of the second phase in the two phase is 0.02, Material parameter setting: the air density is 1.225g/l, the air viscous is 1.7894e-05kg/m3.s, the water density is 998kg/ m3, the water viscous is 8e-04kg/m3.s.
Acknowledgements This project is supported by National Natural Science Foundation of China National Outstanding Youth Science Foundation of China for Overseas Young Scholar (No.50328505).
Lhassan: Journal of Materials Process Technology, Vol.113 (2001), pp.337-341

Factors of Nozzle Design Affecting on Supersonic Flow in Cold Spray Process Sung-Hwan Jang1, Sung-Han Park1, Jeong-Whan Han1, Chang-Hee Lee2, Hyung-Jun Kim 3 1 School of Materials Science and Engineering, Inha University, inchon, 402-751, South Korea, +82-32-860-7543, 2 School of Material Science and Engineering, Hanyang University, Seoul, South Korea 3 Welding Research Center, RIST, Pohang, South Korea jwhan@inha.ac.kr Keywords: cold spray process, particle injection, supersonic flow, simulation, nozzle design Abstract.
Papyinyrin: Cold spray technology, Advanced Materials &Processes (2001), 49-51
Kim: Metals and Materials International, now in press [7] Y.
[9] Henderson, C.B. : AIAA Journal 14, 707 (1976)

The reactions are as follows: When the content of SiO2 exists in the sintering materials, some low melting point compounds such as fayalite can be generated, so the FeO content in sinter increases.
Most of the FeO in sinter comes from raw materials.
The FeO content in sinter rises with the increasing of P under the same conditions of sintering materials.
Fund Project: Supported by Natural Science Foundation of Hebei Province（E2013209339） Author intruduction: Sun Yanqin(1974-), Female, Tangshan, Hebei, Hebei United University Teachers.
Journal of Beijing University of Science and Technology, 2010, 32(3):292-297

And then, we give out the structure and materials of the designed fiber.
The material of the matrix and the cladding is As2S3.
Fig. 2 shows the material dispersion for As2S3.
Acknowledgments This work is partially supported by the Natural Science Foundation of Hunan province (Grant Nos. 10JJ2047).
Journal of Optoelectronics and Advanced Materials, vol. 8 (2006), pp. 2148-2155 [6] D.

The great difficulties for the cutting of the stainless steels involved intense studies to create new materials for cutting tools and sensible choice for the tools geometric parameters and cutting regime [6, 7].
Davis, Ed., ASM Specialty Handbook: Stainless Steels, ASM International, Materials Park, Ohio, 2000
Alintas, Time domain simulation of torsional-vibrations in drilling, International Journal of Machine Tools and Manufacture. 46 (2006) 2073-2085
Processing, Structure and Performance, ASM International, Materials Park, Ohio, 2005
Wirote, Combined sliding-mode speed-torque observer, WSEAS International Conference on System Science and Simulation in Engineering, ICOSSSE'05, Tenerife, Spain, 2005, pp. 191-196

Horita: Materials Transactions, 49, 1 (2008) p. 2-6
Kulagin: Journal of Materials Processing Technology Vol. 209, 7 (2009), p. 3650-3656
Nizovtsev, in: Nanostructured materials by high pressure severe plastic deformation, edited by Y.T.
Soloviev: Reviews in Advanced Materials Science, Vol.10, #3 (2005), p.235
Varyukhin, in: Ultrafine Grained Materials III; edited by Y.T.

The technology's success relies heavily on operational parameters, including bed material properties and combustion conditions [7].
Silica sand, used as bed material, contributes to high combustion efficiency through its excellent heat transfer properties and thermal stability [8].
Materials and experimental setup.
Prior to each experimental run, silica sand (mean particle size: 250 μm, bulk density: 2.6 g/cm³) was introduced into the reactor as bed material.
of Environmental Management, Vol. 247, pp. 123-135 (2019) [8] Prakasa, E., Wijaya, K., Sutanto, H., Evaluation of Bed Materials in Waste-to-Energy Applications: Focus on Thermal Properties and System Stability, Renewable Energy, Vol. 185, pp. 257-268 (2022) [9] Liu, H., Wang, X., Zhang, L., Performance Analysis of Municipal Solid Waste Co-firing in Fluidized Bed Combustion Systems: Effects of Operational Parameters, Applied Energy, Vol. 331, pp. 120375 (2023) [10] Chen, X., Li, H., Wang, Y., Zhang, M., Analysis of Bed Material Behavior and Agglomeration Mechanisms in Biomass-Coal Co-firing Fluidized Bed Systems, Waste Management, Vol. 135, pp. 78-89 (2022) [11] Park, S.J., Kim, J.H., Lee, Y.K., Heat Transfer Mechanisms and Moisture Tolerance in RDF-Coal Co-firing Fluidized Bed Systems, Journal of Cleaner Production, Vol. 382, pp. 135647 (2023) [12] Mulhidin, S., Rahman, A., Pratama, H., Investigation of RDF Mixing Ratios on Furnace Temperature Stability in Coal Power Plants, Energy

Finite Element Analysis of cast-iron sealing device includes contact analysis of metal materials effecting of fluid action.
Hence，finite element analysis of cast-iron sealing devices using springs include contact questions of meter materials and fluid structure interaction.
Simulation result and analysis Material of shell and rotor are 45 cast-steel and material of sealing strip is HT200, Table 1 lists the main mechanical property of materials.
Table 1 mechanical property of materials of cast-iron sealing device names materials density（kg/m 3） Young's modulus E （GPa） Poisson's ratioμ shell and rotor ZG45 7.83×103 202 0.33 sealing strip HT200 7.80×103 130 0.25 Influence of spring stiffness on the Sealing Performance Since the spring decrement changed so little that the spring force is hardly changed, then the force acting on sealing strip is determined by spring stiffness.
Journal of Beijing University of Aeronautics and Astronautics, 2005, 31(5): 255 - 260

Fig. 8 shows material flow in drawing process.
The material yielded at σy + σr > σyo.
[4] Evans W. and Avitzur B.: Tran. of ASME, Journal of Lubrication Technology, (1968), p.72-80
[9] Kuntani N.and Asakwawa M.: Journal of the JSTP, Vol. 38, (1997), p.147-152
[10] Renz P., Steuff W. and Kopp R.: Wire journal international, (1996), p.64-69

Although a lot of wood packaging materials are abundant and renewable, they can only be recycled through burning, which has greatly decreased the utilization rate of wood materials.
Materials and methods Experiment Material.
Test materials: The recycled wood red wine box (fir).
Especially for the degradation products of wood, they can easily have the condensation polymerization to form the new polymer materials at a high temperature [5].
[5] Nu Min, Zhao Gangjie: Journal of Beijing Forestry University.