Cross-flow Wind Turbine Research Articles

Study on Performance Improvement of Cross-Flow Wind Turbine with Symmetrical Casing

Cross-flow wind turbine has a characteristic of high torque coefficient at low tip speed ratio. Therefore, it is good for the self-starting. Furthermore, it is low noise and superior to stability so that it attracts attentions as the city type small-sized wind turbine for urban district. But the maximum power coefficient is extremely low as 10% compared with other small-sized wind turbines. In order to improve the performance and the flow condition of cross-flow rotor, a symmetrical casing with a nozzle and a diffuser was proposed and experimental research with two kinds of symmetrical casings was conducted. The maximum power coefficient was obtained as Cpmax=0.17 for the casing 2, however as Cpmax=0.098 for the casing 1. In the present paper, power characteristics of cross-flow rotor and one of a symmetrical casing with a nozzle and a diffuser were investigated. Then the performance and internal flow field of a cross flow wind turbine with the symmetrical casing were clarified. After that, the effect of the symmetrical casing on performance would be discussed with these results.

Wind Tunnel Experiments of Fences with Cross-Flow Wind Turbine

Wind Tunnel Experiments of Fences with Cross-Flow Wind Turbine

A Study on Optimum Configuration of Cross Flow Wind Turbines with a Pair of Guide Vanes

A Study on Optimum Configuration of Cross Flow Wind Turbines with a Pair of Guide Vanes

708 構造物端壁部に設置したクロスフロー風車の翼枚数と偏流板設定角度が出力特性に及ぼす影響(2)(OS7-2 風力タービン技術,OS7風力タービン技術,オーガナイズドセッション)

708 構造物端壁部に設置したクロスフロー風車の翼枚数と偏流板設定角度が出力特性に及ぼす影響(2)(OS7-2 風力タービン技術,OS7風力タービン技術,オーガナイズドセッション)

1730 ビル風を利用したクロスフロー風車の性能に関する基礎実験(S34-3 自然流体エネルギーの利用技術(3),S34 自然流体エネルギーの利用技術)

1730 ビル風を利用したクロスフロー風車の性能に関する基礎実験(S34-3 自然流体エネルギーの利用技術(3),S34 自然流体エネルギーの利用技術)

1729 ガイドベーンの特性を利用したクロスフロー風車の性能向上に関する研究(S34-3 自然流体エネルギーの利用技術(3),S34 自然流体エネルギーの利用技術)

In the present paper, the cross-flow wind turbine in axial flow type using guide vanes has been studied in order to improve the performance. The wind tunnel test has been carried out to clarify how wind turbine performance changed by method of the placement of the guide vanes. As a result, the performance enhancement by changing the placement of the guide vanes is realized.

1731 クロスフロー型風車周辺および内部流れの可視化と流れ場と出力性能の関係(S34-4 自然流体エネルギーの利用技術(4),S34 自然流体エネルギーの利用技術)

1731 クロスフロー型風車周辺および内部流れの可視化と流れ場と出力性能の関係(S34-4 自然流体エネルギーの利用技術(4),S34 自然流体エネルギーの利用技術)

712 クロスフロー風車の可視化実験による流れ場と出力特性に関する翼枚数による比較(1)(OS7-3 風力タービン技術,OS7風力タービン技術,オーガナイズドセッション)

712 クロスフロー風車の可視化実験による流れ場と出力特性に関する翼枚数による比較(1)(OS7-3 風力タービン技術,OS7風力タービン技術,オーガナイズドセッション)

712 クロスフロー風車の可視化実験による流れ場と出力特性に関する翼枚数による比較(2)(OS7-3 風力タービン技術,OS7風力タービン技術,オーガナイズドセッション)

712 クロスフロー風車の可視化実験による流れ場と出力特性に関する翼枚数による比較(2)(OS7-3 風力タービン技術,OS7風力タービン技術,オーガナイズドセッション)

419 対称形ケーシングを有するクロスフロー風車の研究(流体工学II)

419 対称形ケーシングを有するクロスフロー風車の研究(流体工学II)

1732 対称形ケーシングの形状変化がクロスフロー風車の性能に及ぼす影響について(S34-4 自然流体エネルギーの利用技術(4),S34 自然流体エネルギーの利用技術)

The cross-flow wind turbine has high torque and low speed characteristics and the structure are very simple. However, even if the power coefficient is high, it is about 10%. In this research, in order to improve the performance of a cross-flow turbine, we installed the symmetrical casing that has nozzle and diffuser. Since casing has a nozzle in the symmetrical direction, wind turbine can use the wind that comes opposite direction by installing this casing. Mechanisms, which improve the performance of cross-flow wind turbine, were clarified by an experiment. Furthermore, the details of an internal flow of symmetrical casing were investigated by an experiment and CFD.

708 構造物端壁部に設置したクロスフロー風車の翼枚数と偏流板設定角度が出力特性に及ぼす影響(1)(OS7-2 風力タービン技術,OS7風力タービン技術,オーガナイズドセッション)

708 構造物端壁部に設置したクロスフロー風車の翼枚数と偏流板設定角度が出力特性に及ぼす影響(1)(OS7-2 風力タービン技術,OS7風力タービン技術,オーガナイズドセッション)

Power Characteristics of a Cross Flow Wind Turbine with a Pair of Guide Vanes

Power Characteristics of a Cross Flow Wind Turbine with a Pair of Guide Vanes

Influence of Number of Blade and Blade Setting Angle on the Performance of a Cross-flow Wind Turbine

Influence of Number of Blade and Blade Setting Angle on the Performance of a Cross-flow Wind Turbine

Relation between Visualized Flow Patterns and Performance of a Cross-flow Wind Turbine

Relation between Visualized Flow Patterns and Performance of a Cross-flow Wind Turbine

Improving Ambient Wind Environments of a Cross-flow Wind Turbine Near a Structure by Using an Inlet Guide Structure

Improving Ambient Wind Environments of a Cross-flow Wind Turbine Near a Structure by Using an Inlet Guide Structure

2526 クロスフロー型風車における翼枚数および翼取付角が出力特性に及ぼす影響(S47-4 自然の流体エネルギー利用技衛(風車2),S47 自然の流体エネルギー利用技術)

A cross-flow wind turbine is driven by mainly drag force on its blades. For the performance of a cross-flow wind turbine, the number of blades and blade setting angle are important design parameters. So, we studied influences of these factors on the performance of the wind turbine by changing the number of blades and blade setting angle variously. 6, 8, 10, 12 and 16 blades of 5 cases for the number of blades and 30, 45, 60 and 90 degree of 4 cases for the blade setting angle were tested. 12 blade case and 45 degree blade setting angle case showed the almost highest performance coefficient and stable performance characteristic.

2525 構造物端壁部に設置したクロスフロー風車の入口流れモデルによる偏流板効果の検証(S47-4 自然の流体エネルギー利用技衛(風車2),S47 自然の流体エネルギー利用技術)

2525 構造物端壁部に設置したクロスフロー風車の入口流れモデルによる偏流板効果の検証(S47-4 自然の流体エネルギー利用技衛(風車2),S47 自然の流体エネルギー利用技術)

502 都市型風力発電システムに関する研究 : クロスフロータービンの性能向上(1)(OS5-1 風力発電,OS5 風力発電,オーガナイズドセッション)

502 都市型風力発電システムに関する研究 : クロスフロータービンの性能向上(1)(OS5-1 風力発電,OS5 風力発電,オーガナイズドセッション)

Power Characteristics of Cross Flow Wind Turbines with Guide Vames as Windbreaker

Power Characteristics of Cross Flow Wind Turbines with Guide Vames as Windbreaker