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The purpose of this study is to examine the dynamic performance of an orifice-compensated three-pad hydrostatic squeeze film damper.

A numerical model has been developed and presented to study the effect of eccentricity ratio and pressure ratio on the static and dynamic characteristics of an orifice-compensated three-pad hydrostatic squeeze film damper. It is assumed that the fluid flow is incompressible, laminar, isothermal and steady-state. The finite difference method has been used to solve Reynolds equation governing the lubricant flow in film thickness of hydrostatic bearing. The numerical results obtained are discussed, analyzed and compared between three- and four-lobe hydrostatic journal bearings available in the literature.

It was found that the influence of eccentricity ratio on dynamic characteristics of an orifice-compensated three-pad hydrostatic squeeze film damper appears to be essentially controlled by the concentric pressure ratio. It was also found that the three-pad hydrostatic squeeze film damper has higher stiffness than three and four-lobe hydrostatic journal bearings.

In fact, the results obtained show that this type of hydrostatic squeeze film damper provides hydrostatic designers a new bearing configuration suitable to control rotor vibrations.

Sudan’s challenges are deeply rooted in a complex web of societal, political, and health-related issues. The nation is currently experiencing a challenging period that is impacting various aspects of human life, including the healthcare system for the youth, who are significantly impacted by this crisis that has persisted for a decade. Sudan, located in northeastern Africa, is an Arab nation and a member of the Greater Horn of Africa, along with Ethiopia and South Sudan. Despite its strategic location near the Nile River – a hub for global oil trade and other merchandise – it does not possess any military equipment. Its history, unfortunately, is marked by prolonged social conflicts. These conflicts have significantly affected essential infrastructures, social services, and the overall well-being of the population. We examine the conflict through humanitarian and socio-economic factors affecting Sudan and its people. This chapter explores the role of global economic forces and international relations in Sudan’s ability to address these challenges. Secondly, we explore the social structures, power dynamics, and interdependencies, examining how institutions and societal functions hinder comprehensive issue resolution through structural functionalism. Lastly, we will analyze the legal recognition and protection as foundational elements for human rights and assess the acknowledgment of rights, its absence influences the endurance of multifaceted challenges like health care and educational system by the Right to have Rights.