Gas Turbine Mixed Jet Flows Based on the Coandă Effect

Cîrciu, Ionică; Prisacariu, Vasile; CONSTANTINESCU, Cristian-George

doi:10.19062/1842-9238.2015.13.3.4

Cited by 4 publications

(4 citation statements)

References 2 publications

(1 reference statement)

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“…The fluidic sprinkler, shown schematically (Figure 1A) and pictorially (Figure 1B), is a rotating sprinkler with its working principle based on the theory of the Coanda effect (Cîrciu and Dinea, 2010;Yun et al, 2018) to perform the function of rotation of the sprinkler. The working principle has been detailed by several authors Liu et al, 2008;Yuan et al, 2005;Zhu et al, 2012b;.…”

Section: Working Principle and Structural Design Of Fluidic Sprinklermentioning

confidence: 99%

Structural design and performance characteristics of the fluidic sprinkler application technology for saving irrigation water: a review

Dwomoh,

Zhu,

Fordjour

et al. 2023

J. Agric. Eng.

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The fluidic sprinkler was designed to have the prospect of a simple design, ease of construction, low energy consumption, and water saving. The present review focused on the fluidic sprinkler, compared the performance parameters of the fluidic sprinkler with the impact sprinkler, and highlighted the main challenges associated with the fluidic sprinkler. Even though the fluidic sprinkler compares quite well with the impact sprinkler, the review highlighted that the fluidic sprinkler appears to have more variability in application rate (0-1.5 mm/h) than the impact sprinkler (0-0.8 mm/h). The wetted radii were, on average, less than the impact sprinkler by 9.7, 9.3, 11.0, and 9.9% at 200, 250, 300, and 350 kPa operating pressures, respectively. Experiments on the fluidic sprinkler have mainly concentrated on the structural design of the fluidic component, water distribution profile, coefficient of uniformity, droplet size characterisation, and rotation uniformity, as well as the effect of different nozzle sizes on hydraulic performance under varying discharge and pressure conditions ranging from 100-500 kPa under indoor conditions. However, experimental studies on its performance in the field remain scanty. Statistical analysis of research papers published on the fluidic sprinkler indicates that less than 10% of the studies focused on the performance of the fluidic sprinkler on the field, and more than 90% on the design, structural and hydraulic performance under indoor conditions. Rotation stability of the fluidic sprinkler and testing with different sizes of the nozzle under low-pressure conditions on the field require further research to achieve energy and water saving through optimisation of the operating conditions.

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Section: Working Principle and Structural Design Of Fluidic Sprinklermentioning

confidence: 99%

Structural design and performance characteristics of the fluidic sprinkler application technology for saving irrigation water: a review

Dwomoh,

Zhu,

Fordjour

et al. 2023

J. Agric. Eng.

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“…Although a decreasing of the lift coefficient (C L ) to the wingtips with Eppler 378 profile (1% curvature) can be noticed a better behavior regarding C D , glide ratio (C L /C D ) and the bending moment coefficient (BM) can be observed because of the pressure discharges to the extremal areas of the lifting surfaces, see Figure 13 and figures 14-19. To improve the flow wingtips negative or twisted wing, winglets, [24,25,26] or blowing boundary layer with the Coanda effect in these areas [27,28,29] should be adopted. Eppler 378…”

Section: Incas Bulletin Volume 9 Issue 3/ 2017mentioning

confidence: 99%

Flight Performance of the Biological Lifting Surface

Prisacariu¹

2017

INCAS BULLETIN

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In the international research, biomimetic lifting surface are analyzed in various aspects: construction, aerodynamics and energy. The specificity of the flying wings determined similarity between the aeromechanical and the biomimetic concepts leading to numerous challenges in terms of construction, aerodynamics and actuation. The Aeromechanics of the biological flight focuses both on the various forms of lifting surfaces and the biomechanical aspects. This article contains a number of references to the biological inspiration of the morphing concept, a brief introduction to the theoretical area of the flying wings and a numerical analysis of biologically similar morphing geometry completed by conclusions and future approaches.

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“…Morphing can be defined as the ability to transform or change the shape or nature of an aircraft structure. When applied to an aircraft, this concept refers to the ability to change the shape of the wing during flight while providing an important aerodynamic advantage [1]. This change in shape occurs according to the flight mission of the aircraft or according to its flight conditions.…”

Section: Introductionmentioning

confidence: 99%

Untitled

2023

Review of the Air Force Academy

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In this study, two different wing morphing models were chosen for design and testing. The selected models allow for significant considerations due to their airfoil geometry variation and wingspan variation. The purpose of choosing these prototypes was to highlight the benefits of the morphing wing concept as applied to aircraft, and further applied to UAVs, as well as to light and ultra-light aircraft. In order to confirm these advantages that support the reasons for applying the concept, both structural and aerodynamic analyses were carried out. Finally, the morphing wing model with chord extension was physically manufactured by means of a 3D printing process and tested to validate the proposed concept.

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Gas Turbine Mixed Jet Flows Based on the Coandă Effect

Cited by 4 publications

References 2 publications

Structural design and performance characteristics of the fluidic sprinkler application technology for saving irrigation water: a review

Structural design and performance characteristics of the fluidic sprinkler application technology for saving irrigation water: a review

Flight Performance of the Biological Lifting Surface

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