ڈھلتی سی شام کی جو ہوا چل پڑی تو پھر
اک اختتام کی جو ہوا چل پڑی تو پھر
دل کے محل میں چاہے دریچہ تو مت بنا
میرے ہی نام کی جو ہوا چل پڑی تو پھر
واعظ تو حبس وعظ سے جتنا بھی پیدا کر
مینا و جام کی جو ہوا چل پڑی تو پھر
تیرا خیال ہے کہ ہے یہ درد عارضی
درد دوام کی جو ہوا چل پڑی تو پھر
تو نے سمجھ لیا ہے کہ انمول ہے یہ حسن
اور سستے دام کی جو ہوا چل پڑی تو پھر
حاکم تجھے ہے خوف جو سچ کے نظام سے
گر اس نظام کی جو ہوا چل پڑی تو پھر
Undoubtedly, Youth play cardinal role in the development and reformation of any society. Their activities produce an immense influence in the social development and progress. This article aimed at highlighting the important role of youth in social reforms by keeping in view the Islamic personalities like great companions of Holy Prophet (r). Descriptive and qualitative research approach was employed for the collection and analysis of data. The systematic review of scholarly literature on Islamic history revealed that the Prophet Muhammad (r) gave particular emphasize to nourish young generation in order to mold their lives into an ideal and balanced personality. He by developing intellectual, spiritual, and emotional skills produced such great men who led the mankind and became heroes of history. At the same time they appeared as ideal traders, peaceful citizens, just rulers, true followers of Holy Prophet (r) and loyal worshiper of Allah Almighty. The research by observing present condition of youth found that unfortunately our youth was found in illicit, unethical, useless, and peace demoting activities which promoted social evils and criminal activities. They got involved in unlawful activities including terrorism, killing, robbery, and kidnapping etc. By keeping view the above findings the research strongly recommends to nurture our youth on the footsteps of companions of Holy Prophet (r) in order to bring peace and prosperity in the country. Moreover they should be given awareness about the lives of heroes of Islam who appeared with great titles on the horizon.
In a viscous flow the viscosity effects are prominent only in a thin region near the solid boundary, namely, the boundary-layer or the thin shear layer. Since the start of the last century the study of boundary layer flows has been identified as a self- standing field of research in the area of fluid dynamics. The theory of boundary-layer has greatly helped the scientists and engineers towards the understanding of flow and heat transfer phenomenon in viscous flows. Despite the continuous research of scholars the understanding of three dimensional boundary-layers is still a demanding area of research. Three dimensional boundary-layer momentum equations are more complicated in comparison to the two dimensional ones but still there is a class of flows which are three dimensional with less complicated equation. Such flows are commonly known as axisymmetric flows. Axisymmetric flows occur inside/outside the pipes, over blunt bodies and in rotating disk systems. In this dissertation, we aim to examine various flow situations of multi- dimensional boundary-layer flows of axisymmetric nature. The impact of surface expansion/contraction and rotation has been investigated on the internal boundary- layer flow inside a pipe of uniform cross-section. The effects of surface stretching, rotation and oscillation on momentum and thermal transport in the external boundary- layer have been considered in the flow near a solid cylinder. The stagnation point flow has also been studied in rotating disk boundary-layer flow. Furthermore the effects of magnetohydrodynamic (MHD), suction/injection and unsteadiness have also been investigated in some cases. The calculation of skin friction coefficient and the coefficient of heat transfer has been the major study. Analytic and (or) numerical solutions have been obtained in all cases, however, the preference has been given to the analytic solution. Homotopy analysis method has been used for analytic solution and for numerical computations the shooting technique or the finite difference schemes have been applied. The accuracy and validity of these solutions have been proved in detail either by calculating the residual errors or through comparison with authentic results or both. The analysis reveals that both the momentum and energy transport strongly depend upon the curvature of cylinder. As compared to the flat plate case the coefficient of skin friction and heat transfer are bigger in magnitude for a cylinder of large curvature. For efficient cooling the dissipation effects are recommended to be minimized. Furthermore, the fluids of high Prandtl number are observed to be serving as good coolant.