The fluid motion physics: The interaction mechanics of a free liquid jet with a body and with the other free liquid jet

TL;DR

This paper introduces a graphic-analytical method to study the interaction mechanics of free liquid jets with bodies and other jets, providing insights into flow fields, pressure profiles, and drag components.

Contribution

The paper develops a new graphic-analytical approach to describe free liquid jet interactions, including flow field visualization and quantitative pressure evaluation.

Findings

Identified jet components induced by body fore part affecting drag.

Discovered friction induces jet components in the boundary layer.

Introduced the concept of stream total head vector for jet flow origin.

Abstract

Solution of a problem on the interaction mechanics of a free liquid jet with a flat plate, body and with other jet has been achieved by means of a graphic-analytical method, developed by author of the given article. This method has allowed physically adequately and visually to describe the flow field near the streamlined surface and to give expressions for quantitative evaluation of the jet pressure profile onto this surface. This method is equally correct for both a flat jet and a jet with a round cross-section. Analysis of the flow field has allowed to detect a jet component, induced by the body fore part in the unrestricted fluid stream and determining the body form drag. Besides that, it has been ascertained that a friction also induces the jet component in the potential boundary layer. It has been introduced a new notion of the stream total head vector, determining an origin of the possible jet flow in the stream.