Author: Lembit U. LillelehtPublisher:
ISBN:
Category : Fluid dynamics
Languages : en
Pages : 282
Book Description
Interfacial Structure for a Horizontal Co-current Air-water Flow
Author: Lembit U. LillelehtPublisher:
ISBN:
Category : Fluid dynamics
Languages : en
Pages : 282
Book Description
Interfacial Structure Transition and Axial Flow Development in Horizontal Air-water Two-phase Flow Through a 45 ̊elbow
Author: Tangwen GuoPublisher:
ISBN:
Category : Axial flow
Languages : en
Pages : 302
Book Description
Interfacial Structures of Confined Air-water Two-phase Bubbly Flow
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 25
Book Description
The interfacial structure of the two-phase flows is of great importance in view of theoretical modeling and practical applications. In the present study, the focus is made on obtaining detailed local two-phase parameters in the air-water bubbly flow in a rectangular vertical duct using the double-sensor conductivity probe. The characteristic wall-peak is observed in the profiles of the interracial area concentration and the void fraction. The development of the interfacial area concentration along the axial direction of the flow is studied in view of the interfacial area transport and bubble interactions. The experimental data is compared with the drift flux model with C0 = 1.35.
Interfacial Structure of Oil-water Flow in a Rectangular Conduit
Author: Ronald Golden McClungPublisher:
ISBN:
Category : Two-phase flow
Languages : en
Pages : 224
Book Description
Interfacial Structure Studies in Horizontal Wavy Two-phase Flow
Author: Jian ShiInterfacial Area and Interfacial Transfer in Two-phase Flow Systems
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 5
Book Description
Experiments were performed on horizontal air-water bubbly two-phase flow, axial flow, stratified wavy flow, and annular flow. Theoretical studies were also undertaken on interfacial parameters for a horizontal two-phase flow. (DLC).
Inlet-induced Effects on Vertical Co-current Downward Air-water Two-phase Flow
Author: Daniel MenaPublisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
To accurately design safe and efficient energy systems, such as nuclear reactors, the understanding of two-phase flow transport across ducts of varying orientations and inlet configurations is of critical importance. With this in mind, this study investigated the effects of inlets on interfacial structures of vertical-downward co-current air-water two-phase flow. Experiments were performed in a test facility that allows for the investigation of three different types of vertical downward inlets, namely: two-phase mixture injector without flow straightener (Type A), two-phase mixture injector with flow straightener (Type B), and 90° horizontal-to-vertical downward elbow (Type C). The effects of each inlet on global and local two-phase flow parameters are investigated in detail. Experiment results showed that the Type A inlet induces high rotation and turbulence in the mixture flow that leads to significant coalescence of the bubbles near the centerline of the pipe cross-section. The implementation of the flow straightener in the Type B inlet reduces the rotation and promotes the formation of uniform profiles of local two-phase flow parameters. For the Type C inlet, the creation of secondary flow in the elbow causes the bubbles to migrate to the inner curvature of the elbow resulting in the formation of asymmetrical distributions of void fraction and interfacial area concentration immediately downstream of the elbow inlet. An assessment of the available pressure loss models was performed. It was found that the Lockhart-Martinelli correlation can predict the pressure drop for the Type A, B, and C inlets with an average percent difference of 4.5%, 1%, and 3.4%, respectively, of the experimental data. Furthermore, the Minor Loss model evaluated for the Type C inlet predicts the pressure drop across the elbow with an average percent difference of 1.6%. In view of the one-dimensional transport of two-phase flow parameters, a model is proposed to characterize the dissipation region of the effects induced by the vertical-downward elbow inlet.
Vertical Flow Toward an Air-water Interface Under Sprinkling
Author: Lee RobinsonInterfacial Area Transport Across Vertical Elbows in Air-water Two-phase Flow
Author: Mohan Singh YadavPrimary and Secondary Interfacial Disturbances in Horizontal Cocurrent Flows
Author: William Clement KuruPublisher:
ISBN:
Category :
Languages : en
Pages : 402
Book Description