Numerical Investigation for Liquid - Solid Inclined Fluidized Bed Huda Ridha 1 , Sarah H. Oleiwi 2* 1 Veterinary Medicine College, Wasit University, Wasit 52001, Iraq 2 Mechanical Engineering Department, Babylon University, Babylon 51001, Iraq Corresponding Author Email: hridha@uowasit.edu.iq https://doi.org/10.18280/ijht.380115 ABSTRACT Received: 18 November 2019 Accepted: 24 January 2020 The fluidized bed in this paper was studied in inclined position. The investigation was performed using a computational fluid dynamic model using SolidWorks software program, and Ansys Fluent software programs. The height of the solid particles was studied during the fluidization process with three values of inclination degree angle (20, 40, 60 degree). The model was validated using another experimental paper by Yakubov et al. (2007). The results showed that as velocity of water increased, the upgrading of solid particles inside the pipe increased, meanwhile the expansion of solid particles decreased as the inclination degree of pipe increased. Keywords: Ansys fluent, solid works, inclined fluidized bed, two phase, computational fluid dynamic, fluidization height 1. INTRODUCTION Fluidization is recognized as contacting technique between fluids and solid, several applications use this technique such as particles coating, solid drying, carbonization, gasification, and combustion as well as many others. Fluidization operation have many advantages over other method, like reduce coast of pumping by lowering the pressure drop, mixing the solid particles is good so the temperature maintains uniform, handling the particles of solid is easy compared to other methods, high rate of heat and mass transfer, etc. Reza et al. [1] studied the two-phase fluidized bed using the computational fluid dynamic (CFD) modeling of binary. Rupesh et al. [2] study the CFD modeling of solid-liquid beds of mono and binary particles. Fan et al. [3] study the binary particles simulation using computational fluid dynamic for fluidized bed. Basirat et al. [4] experimentally studied the binary particles separation using gas-solid fluidized bed. Khan [5] studied the reactors of fluidized bed reactors used for polyolefin production using computational fluidized bed simulation. Lu et al. [6] studied the segregation of size for biomass mixture in fluidized bed solid bubbling. Toan et al. [7] studied the glass beads hydrodynamic Characteristics using three-phase computational fluid dynamic simulation. Al- Turaihi et al. [8] studied the height of solid particles experimentally and numerically using CFD Investigation in Water-Solid low in Fluidized Bed Column. Kumar et al. [9] investigated numerically a two-dimensional fluidized bed for two-phase mixing. Jena et al. [10] investigated the minimum Fluidization Velocity and Pressure Drop of Gas-Solid Fluidization in well-mixed homogenies square bed. Stanly et al. [11] study the numerical simulation of gas-solid flows in fluidized bed with TFM model. Wu et al. [12] study model validation for formation pattern in fluidized bed. Wang et al. [13] studied gas–solid fluidized bed numerically by simulating the hydrodynamic characteristics of the bed. Lianga et al. [14] studied the systems of general HVAC duct by analyzing the Geometrical parameters of improved circulating inclined fluidized beds. Nakamura et al. [15] studied the Development of fluidization quality and particle mixing in rotating fluidized bed by injecting the fluidization air in inclined injection. Dea et al. [16] studied the effect of fluidized bed inclination. Sarkar et al. [17] investigated experimentally the fluidization process through an inclined pipe. Hudson et al. [18] study the inclination effect on liquid-solid fluidized beds. Cai et al. [19] investigated the influence of inclination distributor for fluidized bed on the behavior of motion for a large spherical object. Qi et al. [20] studied the effect of the critical motion of particulate for inclined channels in a liquid-solid fluidized bed. Hamed [21] studied experimentally the adsorption processes for inclined-fluidized bed using solid desiccant. Yakubov et al. [22] investigated the structure and dynamics of a liquid–solid fluidized bed in inclined pipes. Callen et al. [23] investigated the control elutriation of gas-fluidized bed by using parallel inclined plates. Fu et al. [24] studied the separation performance and the characteristics of fluidization in a dense- phase gas-solid fluidized bed. The results showed that the average bed density and standard deviation increases as the static bed height increases. Wu et al. [25] developed a multistage fluidized bed to advance dynamic characterizations. Two fluid model along with three-dimensional geometry was used for the numerical simulations. The found that for the multistage fluidized bed, the axial flow regularity reduced. In this work, we investigated a fluidized bed, inclined in three values of inclination degrees. Ansys fluent 15.0 was used for the simulation process. The model was validated using experimental values from another research. 2. NUMERICAL STUDY The experiments for this paper were performed using computational fluid dynamics for inclined fluidized bed. Three values of inclination angle were used (20°, 40°, 60°) (Figure 1). The fluidized bed used is a two-phase solid particles and water, the solid particles have (2803 kg/m 3 ) density and 3.5 mm diameter. Different values of water velocity were examined (0.01, 0.03, 0.05, 0.1, 0.3 m/s), with different values International Journal of Heat and Technology Vol. 38, No. 1, March, 2020, pp. 137-144 Journal homepage: http://iieta.org/journals/ijht 137