FIELD: beds for testing dynamics of fluid flows. SUBSTANCE: simulating portion of tubes, consisting of three different-diameter tubes, is provided by a rocking longeron, having a joint assembly, and a stand, in which the longeron is mounted with possibility of rotation in a vertical plane in a range 0-20 degrees. Glass pipes, having upraising and descending portions, are mutually connected by the angles 120 degrees one relative to another with the aid of bent inserts with welded-in unions. The unions have three-way cocks for supplying gas into a cavity of the tube and for connecting with a reference pressure gage. Cartridge-type stream straighteners in the form of packs of thin-wall tubes, having smaller diameter, are mounted in the upraising portions of the tubes. A pump station is provided by three pumps, connected in parallel. In a suction off line of the station a saturator and a gas balloon for preparing gas saturated pattern liquid, are arranged. The gas balloon is connected by the pump with a reservoir for a liquid, being investigated. EFFECT: enhanced structure of the bed. 4 cl, 3 dwg
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