The multiple stream tube model developed by Strickland [5] is a variation of the single
stream tube model, where the single stream tube is divided into several parallel adjacent
stream tubes that are independent from each other and have their own undisrupted wake and
induced velocities. Several modifications/corrections have been incorporated to this model
where the drag forces, aerofoil geometry, curvature flow, etc. were added; while it relatively
provides better accuracy than single stream, it still lacks experimental validation. The double
multiple stream tube (DMS) model is a variation of the multiple stream tube model, where
the actuator disc is divided in two half cycles in tandem, representing the upstream and
downstream sides of the rotor. This model was presented by Paraschivoiu [6].
The multiple stream tube model developed by Strickland [5] is a variation of the single
stream tube model, where the single stream tube is divided into several parallel adjacent
stream tubes that are independent from each other and have their own undisrupted wake and
induced velocities. Several modifications/corrections have been incorporated to this model
where the drag forces, aerofoil geometry, curvature flow, etc. were added; while it relatively
provides better accuracy than single stream, it still lacks experimental validation. The double
multiple stream tube (DMS) model is a variation of the multiple stream tube model, where
the actuator disc is divided in two half cycles in tandem, representing the upstream and
downstream sides of the rotor. This model was presented by Paraschivoiu [6].
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