> Fundamentals of Fluid Mechanics > Steady Incompressible Flow > Flow around Bodies > Steady Flow of Compressible Fluids > Examples of Transient Flow > Hydraulic Fluid Energy Machines > Components in Piping Systems and Plant Design > Fluidic Experimental Plants > Hydraulics for Civil Engineering
 Products  |  Fluid Mechanics  |  Steady Incompressible Flow  |  HM 225
 HM 225 Aerodynamics Trainer
 Technical Description

Aerodynamics describes the behaviour of bodies during flow around or through bodies with a compressible fluid. The purpose of experiments in aerodynamics is familiarisation with and optimisation of drag and the flow field around a body. This knowledge has a significant influence on the development of means of transport (vehicles, ships, aircraft) and in architecture (skyscrapers, towers and bridges). Aerodynamics also plays a key role in the construction of pipelines and turbo machines.
HM 225 offers – along with its accessories – typical experiments from the field of flow around, incident flow and flow through models, as well as further experiments in the field of steady incompressible flow.
The trainer includes a radial fan, which can be used to generate flow velocities up to 40m/s. The speed is infinitely adjustable by using a frequency converter. A stabilisation tank with flow straightener ensures a consistent, low-turbulence and reproducible flow in the measurement section. A carefully shaped nozzle provides a largely homogeneous velocity distribution of the air flow. The accessory is attached using quick release fasteners and can be interchanged quickly and easily. Measuring points along the measurement section allow pressure and velocity measurements to be taken. The tube manometer, 16-fold (HM 225.01) is required to be able to show the pressures clearly.

The well-structured instructional material sets out the fundamentals and provides a step-by-step guide through the experiments.

Learning Objectives / Experiments

Together with appropriate accessories: experiments from the field of flow around bodies
- velocity measurement of flows with Pitot tube
- boundary layer analysis on a flat plate with flow

along the plate
- drag of bodies
- demonstration of the Coanda effect
- visualisation of streamlines

Together with appropriate accessories: experiments from the field of steady incompressible flow
- velocity measurement of flows with Pitot tube and

Pitotstatic tube
- free jets
- flow in a pipe elbow
- proof of Bernoulli's principle

 Features

* Flow velocities up to 40m/s possible1
* Homogeneous flow through the flow straightener

and special nozzle contour1
* Matching accessories offer a wide range of

experiments

 Available accessories
HM 225.01 -- 16-Tube Manometer
HM 225.02 -- Boundary Layers
HM 225.03 -- Bernoulli's Equation Apparatus
HM 225.04 -- Drag Forces
HM 225.05 -- Flow Around a Bend
HM 225.06 -- Coanda Effect
HM 225.07 -- Round Turbulent Jet Apparatus
HM 225.08 -- Visualisation of Streamlines
 Alternative products
HM 170 -- Open Wind Tunnel
HM 220 -- Airflow Study Unit
HM 226 -- Wind Tunnel for Visualisation of Streamlines
HM 230 -- Flow of Compressible Fluids
 Overview
HM 225 Aerodynamics Trainer
 Specification [1] aerodynamics experiments in the fields of flow around, incident flow and flow through models, as well as further experiments in the field of steady incompressible flow.[2] vertical measurement section with flow straightener and nozzle[3] radial fan infinitely variable via frequency converter[4] thermometer for measuring air temperature[5] accessory securely attached to HM 225 with quick release fasteners[6] tube manometer, 16-fold (HM 225.01) required[7] accessories for the field of flow around bodies: Boundary Layers (HM 225.02)Drag Forces (HM 225.04)Coanda Effect (HM 225.06)Visualisation of Streamlines (HM 225.08)[8] accessories for the field of steady incompressible flow:Bernoulli's Principle (HM 225.03)Flow in a Pipe Elbow (HM 225.05)Free Jets (HM 225.07) Technical Data Radial fan- power consumption: 0,37kW- max. flow rate: 15m³/min- nozzle exit cross-section: 50x100mm- max. flow velocity at the nozzle exit: 40m/s Dimensions and Weight LxWxH: 1.880x800x1.900mmWeight: approx. 220kg Required for Operation 230V, 50/60Hz, 1 phase or 120V, 60Hz, 1 phase Scope of Delivery 1 trainer1 set of instructional material Order Details 070.22500  HM  225  Aerodynamics Trainer