Fluid Pressurizer Channel Layout for Flow Separation Control
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Solution Overview
Problem
Flow separation in fluid systems leads to adverse pressure gradients and high energy losses, particularly in applications like aircraft engine inlets, causing undesirable flow characteristics and damage downstream.
Innovation Solution
The implementation of a fluid system with a main body and a fluid pressurizer, where the pressurizer is positioned within a channel extending from a suction opening to an injection opening, angled relative to the flow direction, to reduce or eliminate flow separation by increasing fluid velocity and pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the main body geometry is altered (adding angled portions), then flow separation is addressed, but device complexity increases
Solution Approach 1:
The main body is divided into multiple portions (first portion with first axis, second portion with second axis angled relative to first) to create controlled flow paths that prevent flow separation through segmented geometric modifications
2Loss of energy
If flow separation is eliminated using conventional methods, then energy losses are reduced, but device complexity increases due to additional components
Solution Approach 1:
The fluid pressurizer is integrated within the channel structure of the main body, merging the pressurization function with the flow guidance structure to eliminate flow separation without requiring separate external components
Solution Approach 2:
The system uses the fluid's own pressure and flow characteristics to prevent flow separation through the angled portions and channel configuration, allowing the fluid dynamics themselves to serve the flow control function
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration enhances fluid flow uniformity, reduces energy losses, and extends the lifespan of downstream machinery by minimizing flow separation, resulting in more efficient and stable fluid dynamics.
Implementation Method 1
Flow separation creates a local adverse pressure gradient such that the pressure increases in the flow direction
Implementation Method 2
The fluid pressurizer is disposed within the channel and is moveable between on and off states such that fluid flows into the suction opening and out of the injection opening when the fluid pressurizer is in the on state
Data Source
AI summary
Fluid systems and methods for addressing fluid separation are described. An example fluid system includes a main body and a fluid pressurizer. The main body has a first portion, a second portion, an injection opening, a suction opening, a channel that extends from the suction opening to the injection opening, and a side wall. The first portion has a first axis that extends along the side wall. The second portion has a second axis that extends along the side wall at an angle relative to the first axis such that when fluid flows over the main body flow separation is defined adjacent to the second portion. The injection opening is disposed at a first location relative to said flow separation. The suction opening is disposed at a second location relative to said flow separation. The channel extends from the suction opening to the injection opening.