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Patrick Weidman - One of the best experts on this subject based on the ideXlab platform.
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Impinging rotational Stagnation-point flows
International Journal of Non-Linear Mechanics, 2017Co-Authors: Patrick WeidmanAbstract:Abstract A rotational Stagnation-point flow of fluid density ρ1 and kinematic viscosity ν1 impinges normal to another rotational Stagnation-point flow of fluid density ρ2 and viscosity ν2. Results are compared with a previous study on the normal impingement of two Homann Stagnation-point flows for which the flow in the far field is irrotational.
D. G. Lasseigne - One of the best experts on this subject based on the ideXlab platform.
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Evolution of disturbances in Stagnation point flow
Journal of Fluid Mechanics, 1994Co-Authors: William O. Criminale, Thomas L. Jackson, D. G. LasseigneAbstract:Abstract : The evolution of three-dimensional disturbances in an incompressible three-dimensional Stagnation-point flow in an inviscid fluid is investigated. Since it is not possible to apply classical normal mode analysis to the disturbance equations for the fully three-dimensional Stagnation-point flow to obtain solutions, an initial-value problem is solved instead. The evolution of the disturbances provide the necessary information to determine stability and indeed the complete transient as well. It is found that when considering the disturbance energy, the planar Stagnation-point flow, which is independent of one of the transverse coordinates, represents a neutrally stable flow whereas the fully three-dimensional flow is either stable or unstable, depending on whether the flow is away from or towards the Stagnation point in the transverse direction that is neglected in the planar Stagnation point. Stagnation flow, Dynamics, Stability.
William O. Criminale - One of the best experts on this subject based on the ideXlab platform.
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Evolution of disturbances in Stagnation point flow
Journal of Fluid Mechanics, 1994Co-Authors: William O. Criminale, Thomas L. Jackson, D. G. LasseigneAbstract:Abstract : The evolution of three-dimensional disturbances in an incompressible three-dimensional Stagnation-point flow in an inviscid fluid is investigated. Since it is not possible to apply classical normal mode analysis to the disturbance equations for the fully three-dimensional Stagnation-point flow to obtain solutions, an initial-value problem is solved instead. The evolution of the disturbances provide the necessary information to determine stability and indeed the complete transient as well. It is found that when considering the disturbance energy, the planar Stagnation-point flow, which is independent of one of the transverse coordinates, represents a neutrally stable flow whereas the fully three-dimensional flow is either stable or unstable, depending on whether the flow is away from or towards the Stagnation point in the transverse direction that is neglected in the planar Stagnation point. Stagnation flow, Dynamics, Stability.
Christina Anselmann - One of the best experts on this subject based on the ideXlab platform.
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Demand-Side Stagnation Theories
Secular Stagnation Theories, 2020Co-Authors: Christina AnselmannAbstract:This chapter is concerned with demand-side theories of secular Stagnation, providing a thorough analysis of the Stagnation hypotheses of various economists emphasizing secular Stagnation as a demand-side issue. These include the pre-Keynesian underconsumptionists Jean Charles Leonard Simonde de Sismondi, Thomas R. Malthus, and John A. Hobson, as well as several twentieth-century economists. Among the latter are John M. Keynes, Alvin H. Hansen—also known as the American Keynes—as well as Michal Kalecki and Josef Steindl. Finally, the theory of Lawrence H. Summers, often referred to as a revival of Hansen’s Stagnation theory, is discussed as the most recent example of a demand-side Stagnation hypothesis.
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Income Distribution in Stagnation Theories
Secular Stagnation Theories, 2020Co-Authors: Christina AnselmannAbstract:This chapter is concerned with the role of income distribution in secular Stagnation theories. While questions of distribution are generally more important in demand-side than in supply-side theories, there are still considerable differences among individual Stagnation hypotheses. In fact, the issue of distribution only plays a peripheral role in the approaches of Keynes, Hansen, Summers, and Gordon. Among the economists involved in the Stagnation debates of the twentieth and twenty-first century, it was Steindl, one of the least recognized Stagnationists in the history of economic thought, who put the (functional) income distribution at the heart of his Stagnation theory. It is argued that Steindl’s hypothesis can enhance the contemporary Stagnation debate by bringing the distribution of income to the fore.
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Stagnation Theories: Concluding Remarks
Secular Stagnation Theories, 2020Co-Authors: Christina AnselmannAbstract:Providing an interim conclusion, this chapter stresses that demand- and supply-side Stagnation theories are not necessarily mutually exclusive, but may complement each other. Moreover, it is emphasized that most Stagnation hypotheses that emerged during the two major waves of secular Stagnation theories in the mid-twentieth century and after the financial crisis of 2008–2009 refer to time periods of high and/or rising income inequality. The chapter thus paves the way for the following chapters, which focus on the impact of changes in income disparities on possible secular Stagnation tendencies.
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Supply-Side Stagnation Theories
Secular Stagnation Theories, 2020Co-Authors: Christina AnselmannAbstract:In contrast to the previous chapter, this chapter focuses on theories of supply-side Stagnation. It includes the hypotheses of Adam Smith, Thomas R. Malthus, John S. Mill, David Ricardo, and Karl Marx, as well as of the twentieth-century-economists Joseph A. Schumpeter, Jean Fourastie, William J. Baumol, and Donella H. Meadows. Although they are not secular Stagnationists as such, it is also referred to Robert M. Solow and Trevor W. Swan, whose neoclassical growth model has dominated mainstream economics since the 1970s and indirectly includes a theory of Stagnation. Moreover, the Stagnation theory of Robert J. Gordon is discussed, which, in the contemporary Stagnation debate, is commonly viewed as the supply-side counterpart to Lawrence H. Summers’s demand-side approach.
Thomas L. Jackson - One of the best experts on this subject based on the ideXlab platform.
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Evolution of disturbances in Stagnation point flow
Journal of Fluid Mechanics, 1994Co-Authors: William O. Criminale, Thomas L. Jackson, D. G. LasseigneAbstract:Abstract : The evolution of three-dimensional disturbances in an incompressible three-dimensional Stagnation-point flow in an inviscid fluid is investigated. Since it is not possible to apply classical normal mode analysis to the disturbance equations for the fully three-dimensional Stagnation-point flow to obtain solutions, an initial-value problem is solved instead. The evolution of the disturbances provide the necessary information to determine stability and indeed the complete transient as well. It is found that when considering the disturbance energy, the planar Stagnation-point flow, which is independent of one of the transverse coordinates, represents a neutrally stable flow whereas the fully three-dimensional flow is either stable or unstable, depending on whether the flow is away from or towards the Stagnation point in the transverse direction that is neglected in the planar Stagnation point. Stagnation flow, Dynamics, Stability.
