In this dissertation an attempt has been made to study heat generating Viscous fluid past a hot vertical wall with transverse sinusoidal periodic suction velocity distribution including dissipative effects. The flow is three dimensional although the dependence of the velocity and the temperature variables along the z-direction (direction of variation of suction) is confined to sinusoidal variation, keeping in view the imposed periodic suction distribution. The velocity and the temperature distributions have been calculated for different variations in the governing parameters. The shear stress and the rate of heat transfer have been evaluated for different variations.