SUMMARY The oharaoteristics of a 60' apex angle cone for measuring local Maoh number, total pressure, and flow directions have been determined at Mach numbers of 2.47, 3.25, 3.97 and 4.32 at angles of pitch up to 29'.

In a smooth flow, the leading-order response of trajectories to infinitesimal perturbations in their initial conditions is described by the finite-time Lyapunov exponents and associated characteristic directions of stretching. We give a description of the second-order response to perturbations in terms of Lagrangian derivatives of the exponents and characteristic directions. These derivatives a...

For a bounded domain Ω ⊂ Rm,m ≥ 2, of class C0, the properties are studied of fields of ‘good directions’, that is the directions with respect to which ∂Ω can be locally represented as the graph of a continuous function. For any such domain there is a canonical smooth field of good directions defined in a suitable neighbourhood of ∂Ω, in terms of which a corresponding flow can be defined. Using...

This paper presents some of the results of the simulation in the radiation section of an industrial boiler using an advanced mathematical model. Calculations are described for the flow, heat transfer, and chemical reaction processes occurring within a gas-fired cylindrical furnace. The calculation procedure is a two dimensional one in which the main hydrodynamic variables are the velocity and s...

Background EC-IC bypass surgery is performed in the patients with internal carotid artery occlusion (ICO) or who undergo ligature of the internal carotid artery (ICA) for the treatment of aneurysm. The flow directions are varied according to the relative pressure of some intracranial arteries following post EC-IC bypass. Abnormal retrograde flow is often observed at the ipsilateral M1 segment o...

[Received on ] Thixotropic yield stress fluids have a yield stress and viscosity which change slowly over time as the fluid undergoes structural changes. This article reviews recent work which shows how such behavior can arise as a limit of viscoelastic flow when a relaxation time becomes large. The large relaxation time introduces a small parameter which can be used as a basis for singular per...

A novel boundary detection scheme based on “edge flow” is proposed in this paper. This scheme utilizes a predictive coding model to identify the direction of change in color and texture at each image location at a given scale, and constructs an edge flow vector. By iteratively propagating the edge flow, the boundaries can be detected at image locations which encounter two opposite directions of...

A novel boundary detection method based on edge flow is proposed in this paper. This method utilizes a predictive coding model to identify the direction of change in color and texture at each image location at a given scale, and constructs an edge flow vector. By iteratively propagating the edge flow, the boundaries can be detected at image locations which encounter two opposite directions of f...

In this poster we present visualizations of the UNHCR Refugee Dataset produced with JFlowMap, a graphical tool for the visualization and exploration of spatial interactions and their development in time. The basic view provided by the tool is the flow map which represents entities flowing between geographical locations with lines connecting the flow sources and the destinations. We show example...

What constitutes a good life? Few questions are of more fundamental importance to a positive psychology. Flow research has yielded one answer, providing an understanding of experiences during which individuals are fully involved in the present moment. Viewed through the experiential lens of flow, a good life is one that is characterized by complete absorption in what one does. In this chapter, ...