for a long time, many efforts have been taken on improving gas turbine performance to increase the propulsive force and keep the chamber walls cool. in this regard, implementation of cyclonic and vortex engines have been proposed. according to increasing in the engine efficiency and keeping the chamber walls cool, the bidirectional vortex flow which is exited in the vortex engine, makes researc...

— Vortices can be produced and ingested into the intake of a jet engine during high power operation in the vicinity of solid surfaces causing Foreign Object Damage (FOD) or compressor stall and engine surge problems. This can occur when the engine is mounted on the wing of a plane during takeoff and engine ground runs or when the engine is placed inside a test cell for testing after an engine o...

Vortices can develop in intakes of turbojet and turbo fan aero engines during high power operation in the vicinity of solid surfaces. These vortices can cause catastrophic damage to the engine. The factors determining the formation of the vortex include both geometric dimensions as well as flow parameters. It was shown that the threshold at which the vortex forms or disappears is also dependent...

Vortical structures can develop in the intakes of aircraft engines during operation in the proximity of solid surfaces. Take-off and testing in a ground facility are clear examples of such scenarios. When such a vortex is formed and ingested into the engine, potentially catastrophic damage can occur. The vortex can cause the compressor to stall, resulting in severe damage to the engine. Procedu...

Successful retrieval of relevant images from large-scale image collections is one of the current problems in the field of data management. In this paper, I propose a system which combines traditional CBIR techniques, such as feature extraction, with a thesaurus for objects / shapes. A brief presentation of the problem area is given, along with the basics of a prototype system, the VORTEX engine.

The Lagrangian vortex method offers an alternative numerical approach for direct numerical simulation of turbulence. The fact that it uses the fast multipole method (FMM)—a hierarchical algorithm for N-body problems with highly scalable parallel implementations—as numerical engine makes it a potentially good candidate for exascale systems. However, there have been few validation studies of Lagr...

This paper is concerned primarily with screw conveyors with fully enclosed tubular casings. The throughput, torque and power are significantly influenced by the vortex motion of the bulk solid being conveyed. The vortex motion, together with the degree of fill, govern the volumetric efficiency and, hence, the throughput. This, in turn, influences the torque, power and conveying efficiency. A th...

Ide dasar yang melandasi penelitian ini adalah pemanfaatan gas buang engine pesawat digunakan untuk sistem anti icing, sehingga di dapatkan sebuah mekanisme operasional efektif mengatasi icing terjadi pada karburator piston engine. Sistem dibuat meliputi shell dan tube diberikan vortex generator berupa buffle dimodifikasi, adapun variasi dari yaitu line buffle, with circular hole, square hole. ...