So, on the disc, where ^ = 0, Qj(z0) = —1. Therefore, the pressure distribution is p( p) = -cVi - p2

If the pressure in Equation (3.161) is non-dimensionalized using the free-stream dynamic pressure (1/2)pU^ the value of C° can be related to the thrust coefficient by integrating the pressure distribution of Equation (3.161) over the disc area n R2 CT = — R2 Ci


and so the pressure step across the disc is

Renewable Energy 101

Renewable Energy 101

Renewable energy is energy that is generated from sunlight, rain, tides, geothermal heat and wind. These sources are naturally and constantly replenished, which is why they are deemed as renewable. The usage of renewable energy sources is very important when considering the sustainability of the existing energy usage of the world. While there is currently an abundance of non-renewable energy sources, such as nuclear fuels, these energy sources are depleting. In addition to being a non-renewable supply, the non-renewable energy sources release emissions into the air, which has an adverse effect on the environment.

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