Introduction of Boundary-layer Wind Tunnel

Takakura, Shinichi; Suyama, Yoshimi; Aoki, Taimei; Yoshimura, Naoki; Shoji, Tetsuo

doi:10.5359/jawe.1993.31

Cited by 2 publications

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A wind tunnel (2.4W 9 2H 9 21L m, Fig. 1) from the Hazama Technical Research Institute in Tsukuba Ibaraki, Japan was used for the experiments (Takakura et al 1993;Ushiyama et al 2009). A constant airflow of 2 m s -1 was regulated using an ultrasonic anemometer, located at 12.5 m from the plant.…”

Section: Field Assessmentmentioning

confidence: 99%

Wind tunnel and field assessment of pollen dispersal in Soybean [Glycine max (L.) Merr.]

Yoshimura

2010

J Plant Res

View full text Add to dashboard Cite

Although genetically modified (GM) soybean has never been cultivated commercially in Japan, it is essential to set up the isolation distance required to prevent out-crossing between GM and conventional soybean in preparation for any future possibility of pollen transfer. The airborne soybean pollen was sampled using some Durham pollen samplers located in the range of 20 m from the field edge. In addition, the dispersal distance was assessed in a wind tunnel under constant air flow and then it was compared with the anticipated distances based on the pollen diameter. In the field, the maximum pollen density per day observed was 1.235 grains cm(-2) day(-1) at three observation points within 2.5 m from the field and inside the field the mean density did not reach the rate of 1 grain cm(-2 )day(-1) during 19 flowering days. The results of the wind tunnel experiment also showed that the plants had almost no airborne release of pollen and the dispersal distance was shorter than theoretical value due to clustered dispersal. This study showed little airborne pollen in and around the soybean field and the dispersal is restricted to a small area. Therefore, wind-mediated pollination appears to be negligible.

show abstract

Section: Field Assessmentmentioning

confidence: 99%

Wind tunnel and field assessment of pollen dispersal in Soybean [Glycine max (L.) Merr.]

Yoshimura

2010

J Plant Res

View full text Add to dashboard Cite

show abstract

Measurements of wind suppression effects of windbreak net using a wind tunnel for the purpose of applying numerical simulations

Ushiyama¹,

Inoue²,

Shibaike³

2009

J. Agric. Meteorol.

View full text Add to dashboard Cite

Windbreak nets are most often used to prevent agricultural wind damage, since they are cheap and easy to install. However, little is provided concerning the dynamical characteristics of such windbreak nets, hampering the design of windbreak planning through the quantitative use of the latter. We measured both dynamical characteristics and wind fields around popular five windbreak materials using a wind tunnel. Subsequently, we tried to simulate the measured wind field using a numerical atmospheric model. The measured wind fields show various flow patterns around windbreaks well known in literature, with recirculating eddies for two spunbonded fabric windbreaks. The relationship between the wind field patterns and porosities of the windbreaks is more or less the same as in past studies, while the numerical simulations reproduce wind fields around the three popular windbreak nets fairly well. It is confirmed that the wind tunnel measurements and numerical simulations are reliable means to reproduce realistic wind field around popular windbreak nets.

show abstract

Introduction of Boundary-layer Wind Tunnel

Cited by 2 publications

References 0 publications

Wind tunnel and field assessment of pollen dispersal in Soybean [Glycine max (L.) Merr.]

Wind tunnel and field assessment of pollen dispersal in Soybean [Glycine max (L.) Merr.]

Measurements of wind suppression effects of windbreak net using a wind tunnel for the purpose of applying numerical simulations

Contact Info

Product

Resources

About