The Experts below are selected from a list of 7269 Experts worldwide ranked by ideXlab platform
De Mm Michiel Beer - One of the best experts on this subject based on the ideXlab platform.
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engineering model for single phase flow in a multi stage rotor stator spinning disc reactor
Chemical Engineering Journal, 2014Co-Authors: De Mm Michiel Beer, J Jaap C Schouten, Jtf Jos Keurentjes, Van Der John J SchaafAbstract:An engineering model for single-phase flow in a multi-stage rotor–stator spinning disc reactor is presented. The model is based on residence time distribution data, obtained by tracer injection experiments. Measurements are done for gap ratios of G = 0.017 and 0.03, rotational Reynolds numbers of Re = 4.4 × 104 to 2.05 × 106 and superposed dimensionless Throughflow rates of Cw = 127–421. A single rotor–stator cavity can be described by regions of radial plug flow at low radial disc positions, in combination with a single ideally mixed region at high radial positions. The radial position where transition between plug flow and ideally mixed regions occurs decreases with increasing rotational Reynolds number and gap ratio, and increases with increasing superposed Throughflow rate. The resulting flow model is explained by the Throughflow and rotation dominated regions observed in rotor–stator cavities with superposed Throughflow. The model can be used to quantify performance characteristics of rotor–stator spinning disc reactors, without application of extensive numerical simulations. Results indicate that the model can be scaled up with any number of rotor–stator cavities in series, as well as with increasing disc radius and gap ratio. This makes it a valuable tool in scaling up production capacity of the spinning disc reactor.
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Engineering model for single-phase flow in a multi-stage rotor–stator spinning disc reactor
Chemical Engineering Journal, 2014Co-Authors: De Mm Michiel Beer, Jc Jaap Schouten, Jtf Jos Keurentjes, Van Der J John SchaafAbstract:An engineering model for single-phase flow in a multi-stage rotor–stator spinning disc reactor is presented. The model is based on residence time distribution data, obtained by tracer injection experiments. Measurements are done for gap ratios of G = 0.017 and 0.03, rotational Reynolds numbers of Re = 4.4 × 104 to 2.05 × 106 and superposed dimensionless Throughflow rates of Cw = 127–421. A single rotor–stator cavity can be described by regions of radial plug flow at low radial disc positions, in combination with a single ideally mixed region at high radial positions. The radial position where transition between plug flow and ideally mixed regions occurs decreases with increasing rotational Reynolds number and gap ratio, and increases with increasing superposed Throughflow rate. The resulting flow model is explained by the Throughflow and rotation dominated regions observed in rotor–stator cavities with superposed Throughflow. The model can be used to quantify performance characteristics of rotor–stator spinning disc reactors, without application of extensive numerical simulations. Results indicate that the model can be scaled up with any number of rotor–stator cavities in series, as well as with increasing disc radius and gap ratio. This makes it a valuable tool in scaling up production capacity of the spinning disc reactor.
Van Der John J Schaaf - One of the best experts on this subject based on the ideXlab platform.
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engineering model for single phase flow in a multi stage rotor stator spinning disc reactor
Chemical Engineering Journal, 2014Co-Authors: De Mm Michiel Beer, J Jaap C Schouten, Jtf Jos Keurentjes, Van Der John J SchaafAbstract:An engineering model for single-phase flow in a multi-stage rotor–stator spinning disc reactor is presented. The model is based on residence time distribution data, obtained by tracer injection experiments. Measurements are done for gap ratios of G = 0.017 and 0.03, rotational Reynolds numbers of Re = 4.4 × 104 to 2.05 × 106 and superposed dimensionless Throughflow rates of Cw = 127–421. A single rotor–stator cavity can be described by regions of radial plug flow at low radial disc positions, in combination with a single ideally mixed region at high radial positions. The radial position where transition between plug flow and ideally mixed regions occurs decreases with increasing rotational Reynolds number and gap ratio, and increases with increasing superposed Throughflow rate. The resulting flow model is explained by the Throughflow and rotation dominated regions observed in rotor–stator cavities with superposed Throughflow. The model can be used to quantify performance characteristics of rotor–stator spinning disc reactors, without application of extensive numerical simulations. Results indicate that the model can be scaled up with any number of rotor–stator cavities in series, as well as with increasing disc radius and gap ratio. This makes it a valuable tool in scaling up production capacity of the spinning disc reactor.
Van Der J John Schaaf - One of the best experts on this subject based on the ideXlab platform.
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Engineering model for single-phase flow in a multi-stage rotor–stator spinning disc reactor
Chemical Engineering Journal, 2014Co-Authors: De Mm Michiel Beer, Jc Jaap Schouten, Jtf Jos Keurentjes, Van Der J John SchaafAbstract:An engineering model for single-phase flow in a multi-stage rotor–stator spinning disc reactor is presented. The model is based on residence time distribution data, obtained by tracer injection experiments. Measurements are done for gap ratios of G = 0.017 and 0.03, rotational Reynolds numbers of Re = 4.4 × 104 to 2.05 × 106 and superposed dimensionless Throughflow rates of Cw = 127–421. A single rotor–stator cavity can be described by regions of radial plug flow at low radial disc positions, in combination with a single ideally mixed region at high radial positions. The radial position where transition between plug flow and ideally mixed regions occurs decreases with increasing rotational Reynolds number and gap ratio, and increases with increasing superposed Throughflow rate. The resulting flow model is explained by the Throughflow and rotation dominated regions observed in rotor–stator cavities with superposed Throughflow. The model can be used to quantify performance characteristics of rotor–stator spinning disc reactors, without application of extensive numerical simulations. Results indicate that the model can be scaled up with any number of rotor–stator cavities in series, as well as with increasing disc radius and gap ratio. This makes it a valuable tool in scaling up production capacity of the spinning disc reactor.
Jtf Jos Keurentjes - One of the best experts on this subject based on the ideXlab platform.
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engineering model for single phase flow in a multi stage rotor stator spinning disc reactor
Chemical Engineering Journal, 2014Co-Authors: De Mm Michiel Beer, J Jaap C Schouten, Jtf Jos Keurentjes, Van Der John J SchaafAbstract:An engineering model for single-phase flow in a multi-stage rotor–stator spinning disc reactor is presented. The model is based on residence time distribution data, obtained by tracer injection experiments. Measurements are done for gap ratios of G = 0.017 and 0.03, rotational Reynolds numbers of Re = 4.4 × 104 to 2.05 × 106 and superposed dimensionless Throughflow rates of Cw = 127–421. A single rotor–stator cavity can be described by regions of radial plug flow at low radial disc positions, in combination with a single ideally mixed region at high radial positions. The radial position where transition between plug flow and ideally mixed regions occurs decreases with increasing rotational Reynolds number and gap ratio, and increases with increasing superposed Throughflow rate. The resulting flow model is explained by the Throughflow and rotation dominated regions observed in rotor–stator cavities with superposed Throughflow. The model can be used to quantify performance characteristics of rotor–stator spinning disc reactors, without application of extensive numerical simulations. Results indicate that the model can be scaled up with any number of rotor–stator cavities in series, as well as with increasing disc radius and gap ratio. This makes it a valuable tool in scaling up production capacity of the spinning disc reactor.
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Engineering model for single-phase flow in a multi-stage rotor–stator spinning disc reactor
Chemical Engineering Journal, 2014Co-Authors: De Mm Michiel Beer, Jc Jaap Schouten, Jtf Jos Keurentjes, Van Der J John SchaafAbstract:An engineering model for single-phase flow in a multi-stage rotor–stator spinning disc reactor is presented. The model is based on residence time distribution data, obtained by tracer injection experiments. Measurements are done for gap ratios of G = 0.017 and 0.03, rotational Reynolds numbers of Re = 4.4 × 104 to 2.05 × 106 and superposed dimensionless Throughflow rates of Cw = 127–421. A single rotor–stator cavity can be described by regions of radial plug flow at low radial disc positions, in combination with a single ideally mixed region at high radial positions. The radial position where transition between plug flow and ideally mixed regions occurs decreases with increasing rotational Reynolds number and gap ratio, and increases with increasing superposed Throughflow rate. The resulting flow model is explained by the Throughflow and rotation dominated regions observed in rotor–stator cavities with superposed Throughflow. The model can be used to quantify performance characteristics of rotor–stator spinning disc reactors, without application of extensive numerical simulations. Results indicate that the model can be scaled up with any number of rotor–stator cavities in series, as well as with increasing disc radius and gap ratio. This makes it a valuable tool in scaling up production capacity of the spinning disc reactor.
Claus W. Böning - One of the best experts on this subject based on the ideXlab platform.
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Pacific‐to‐Indian Ocean connectivity: Tasman leakage, Indonesian Throughflow, and the role of ENSO
Journal of Geophysical Research: Oceans, 2014Co-Authors: Erik Van Sebille, Janet Sprintall, Franziska U. Schwarzkopf, Alex Sen Gupta, Agus Santoso, Matthew H. England, Arne Biastoch, Claus W. BöningAbstract:The upper ocean circulation of the Pacific and Indian Oceans is connected through both the Indonesian Throughflow north of Australia and the Tasman leakage around its south. The relative importance of these two pathways is examined using virtual Lagrangian particles in a high-resolution nested ocean model. The unprecedented combination of a long integration time within an eddy-permitting ocean model simulation allows the first assessment of the interannual variability of these pathways in a realistic setting. The mean Indonesian Throughflow, as diagnosed by the particles, is 14.3 Sv, considerably higher than the diagnosed average Tasman leakage of 4.2 Sv. The time series of Indonesian Throughflow agrees well with the Eulerian transport through the major Indonesian Passages, validating the Lagrangian approach using transport-tagged particles. While the Indonesian Throughflow is mainly associated with upper ocean pathways, the Tasman leakage is concentrated in the 400–900 m depth range at subtropical latitudes. Over the effective period considered (1968–1994), no apparent relationship is found between the Tasman leakage and Indonesian Throughflow. However, the Indonesian Throughflow transport correlates with ENSO. During strong La Ninas, more water of Southern Hemisphere origin flows through Makassar, Moluccas, Ombai, and Timor Straits, but less through Moluccas Strait. In general, each strait responds differently to ENSO, highlighting the complex nature of the ENSO-ITF interaction.
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pacific to indian ocean connectivity tasman leakage indonesian Throughflow and the role of enso
Journal of Geophysical Research, 2014Co-Authors: Erik Van Sebille, Janet Sprintall, Franziska U. Schwarzkopf, Alex Sen Gupta, Agus Santoso, Matthew H. England, Arne Biastoch, Claus W. BöningAbstract:The upper ocean circulation of the Pacific and Indian Oceans is connected through both the Indonesian Throughflow north of Australia and the Tasman leakage around its south. The relative importance of these two pathways is examined using virtual Lagrangian particles in a high-resolution nested ocean model. The unprecedented combination of a long integration time within an eddy-permitting ocean model simulation allows the first assessment of the interannual variability of these pathways in a realistic setting. The mean Indonesian Throughflow, as diagnosed by the particles, is 14.3 Sv, considerably higher than the diagnosed average Tasman leakage of 4.2 Sv. The time series of Indonesian Throughflow agrees well with the Eulerian transport through the major Indonesian Passages, validating the Lagrangian approach using transport-tagged particles. While the Indonesian Throughflow is mainly associated with upper ocean pathways, the Tasman leakage is concentrated in the 400–900 m depth range at subtropical latitudes. Over the effective period considered (1968–1994), no apparent relationship is found between the Tasman leakage and Indonesian Throughflow. However, the Indonesian Throughflow transport correlates with ENSO. During strong La Ninas, more water of Southern Hemisphere origin flows through Makassar, Moluccas, Ombai, and Timor Straits, but less through Moluccas Strait. In general, each strait responds differently to ENSO, highlighting the complex nature of the ENSO-ITF interaction.
