# Implementation of Computational Fluids Dynamics – Lab Report Example

The paper “ Implementation of Computational Fluids Dynamics”   is a worthy version of a lab report on engineering and construction. The main aim of the project was to carry out computerized fluid dynamics of s-shaped pipe in terms of its behavior when pressure, temperature, velocity, Mach number, and change of density and velocity used. The analysis will be a 3D dynamics simulation and the result will be recorded in form screen shorts and graphs. The result will be compared to the conclusion that will be made. AssumptionsThe following are the assumption will consider The fluids that will be used is water and oil The Mach number range is from 0.048753 to 0.54885 The velocity will be varied between 17 m/s AND 186m/s, Pressure ranges pressure range is from 0.80kPa to 0.95kPa The length of pipe considered is 0.1 to 0.7m MeshIn the 2D analysis, the mesh will choose for fluid flow as well as the pipe the selected mesh for the pipe is square and its shown below.

It can be noted that it has many cells. GeometryThe mesh geometry of the pipe to be used is shown below that is the front part of the pipe.

The main reason for considering the front part of the pipe is that it receives the fluid first. If it is in terms of the temperature it will receive the highest / coldest temperature first. The geometry will guide the flow of the liquid. That’ s why we have divergent geometry of the flow environment at the front. The boundary layer formed in the pipe contained for vortices that is feed into the shear layer when water is flowing. The geometry figure is shown below. Numerical calculationIn the case at hand, Euler-Bernoulli Beam Theorem will be used in deriving a solution for the flow of the liquid within the s section of the pipe.

The following formula is adopted in demining the boundary conditions of the flow. the boundary conditions for the equation are, Then the natural frequency will be, and. When and Pressure variationThe pressure was varied between 0.8kPa to 0.95kPa. This was done by varying the streamline of the liquid into the pipe. Once the liquid is in the pipe at the entry point and the pressure is exerted the direction of the liquid will not change.

The direction at any given point is always tangent to the streamline of the liquid passing at that point. The figure below shows the impact of changes in pressure against the distance covered. The intention is to show how varying pressure will be affected by the distance covered. From the graph, it can be noted that the pressure increases as the distance increases. It can be noted that the relationship between pressure and distance is positive and as distance increases pressure increases these findings are critical to the management of the piping system. From the figure the lowest entry pressure was 0.85Kpa and the largest entry pressure is 0.85kPa.

it will be noted that pressure increased to 0.915kPa at 0.35m from the entry this can be explained using the rolls of pressure. . Since the discharge of flow is dependent on the velocity of the flow, which in turn is dependent on the pressure head differences, results obtained using the distance within the pipe.

References

Eleni, D. C., Athanasios, T. I. &Dionissios, M. P., 2011. Evaluation of the turbulence models for the simulation of the flow over a National Advisory Committee for Aeronautics (NACA) 0012 airfoil. Journal of Mechanical Engineering Research

Sahul, N. K. & Imam, S. 2015.Analysis of Transonic Flow over an Airfoil NACA0012 using CFD.International Journal of Innovative Science, Engineering & Technology,

Zhao, M., Cheng, L., & Teng, B., 2007, Numerical Modeling of Flow and Hydrodynamic Forces around a Piggyback Pipeline near the Seabed, Journal of Waterway, Port, Coastal, and Ocean Engineering, pp.286-294.