Development of a High Efficiency In-Line Tube Fan Using CFD
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Hung-Cheng Yen
,
Chi-Wen Lu
Abstract
An in-line tube fan with design flow rate 1 m3/s, static pressure 1030 Pa, rotation speed 3450 rpm, and specific speed 2.1 was investigated. Inverse design method was used to design deswirl vane while CFD to analyze its flow field. Results showed that although the efficiency of the axial straight flat plate is poor, it remained better than that of the vaneless type. The efficiency of deswirl vane was much higher than the previous two. However, when the casing-impeller ratio was lower than 1.25, completely recovering tangential velocity would result in large recirculation flow near outlet of deswirl vane. When the casing-impeller ratio increased to 1.33, the recirculation flow and pressure loss were obviously reduced. When the casing-impeller ratio increased to 1.46, the deswirl vane almost completely recovered tangential velocity, and pressure loss was further reduced. Static pressure and efficiency at operating point were 10% and 6% higher than the casing-impeller ratio 1.33.
©2015 by De Gruyter
Artikel in diesem Heft
- Frontmatter
- Study on Internal Flow and External Performance of a Semi-open Impeller Centrifugal Pump with Different Tip Clearances
- A Numerical Study of Spray Injected in a Gas Turbine Lean Pre-Mixed Pre-Vaporized Combustor
- Coupling Optimization Design of Aspirated Compressor Airfoil and Aspirated Scheme Based on Artificial Bee Colony Algorithm and CST Method
- Propagation of Different Types of Inflow Distortions through a Contra Rotating Fan Stage
- A Method to Determine the Slip Factor of Centrifugal Pumps through Experiment
- Investigation of Blade Angle of an Open Cross-Flow Runner
- Mixing Characteristics of Elliptical and Rectangular Subsonic Jets with Swirling Co-flow
- Effect of Operating Variables on the Performance of a Highly Loaded Annular Combustor
- Numerical Investigations on the Nanosecond Pulse Discharge Process of Disk-Shape Plasma Igniter
- Development of a High Efficiency In-Line Tube Fan Using CFD
Artikel in diesem Heft
- Frontmatter
- Study on Internal Flow and External Performance of a Semi-open Impeller Centrifugal Pump with Different Tip Clearances
- A Numerical Study of Spray Injected in a Gas Turbine Lean Pre-Mixed Pre-Vaporized Combustor
- Coupling Optimization Design of Aspirated Compressor Airfoil and Aspirated Scheme Based on Artificial Bee Colony Algorithm and CST Method
- Propagation of Different Types of Inflow Distortions through a Contra Rotating Fan Stage
- A Method to Determine the Slip Factor of Centrifugal Pumps through Experiment
- Investigation of Blade Angle of an Open Cross-Flow Runner
- Mixing Characteristics of Elliptical and Rectangular Subsonic Jets with Swirling Co-flow
- Effect of Operating Variables on the Performance of a Highly Loaded Annular Combustor
- Numerical Investigations on the Nanosecond Pulse Discharge Process of Disk-Shape Plasma Igniter
- Development of a High Efficiency In-Line Tube Fan Using CFD
