Abstract
The typhoon makes a serious damage to the apple farmer by dropping apple before the harvest due to the strong wind. We investigated the drag coefficient C_D of apple models. We are focusing on the influence of the bag to cultivate the delicious fruit. The C_D was obtained in experimentally with or without bag. The drag force and the shear stress of stem under the condition of typhoon were determined from the obtained C_D. The drag force increased with using a bag, so that the shear force acting on model also increased. The obtained shear stress was compared with allowable shear stress of real tree. The direction of bag realizes the shear stress less than the allowable value. Thus, the dropping apple due to strong wind can decrease with the suitable shape of bag to decrease the drag force.
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Claims 4
Claim · model-written summary
Using a bag increased the drag force on apple models compared with no bag.
- Taxon
- apple
Malus domesticae0 - Treatment
- using a bage2
- Outcome
- drag forcee2
- Direction
- increasede2
- Comparator
- without bage6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Flow around a fruit”
e0“The typhoon makes a serious damage to the apple farmer by dropping apple before the harvest due to the strong wind”
e2“The drag force increased with using a bag, so that the shear force acting on model also increased”
e6“The C_D was obtained in experimentally with or without bag”
Claim · model-written summary
Using a bag increased the shear force acting on apple models compared with no bag.
- Taxon
- appleMalus domesticae0
- Treatment
- using a bage2
- Outcome
- shear forcee2
- Direction
- increasede2
- Comparator
- without bage6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Flow around a fruit”
e0“The typhoon makes a serious damage to the apple farmer by dropping apple before the harvest due to the strong wind”
e2“The drag force increased with using a bag, so that the shear force acting on model also increased”
e6“The C_D was obtained in experimentally with or without bag”
Claim · model-written summary
The direction of the bag keeps the shear stress on the stem below the allowable shear stress of a real tree.
- Taxon
- appleMalus domesticae0
- Treatment
- direction of bage4
- Outcome
- shear stresse4
- Direction
- less thane4
- Comparator
- allowable shear stress of real treee3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Flow around a fruit”
e0“The typhoon makes a serious damage to the apple farmer by dropping apple before the harvest due to the strong wind”
e3“The obtained shear stress was compared with allowable shear stress of real tree”
e4“The direction of bag realizes the shear stress less than the allowable value”
Claim · model-written summary
A suitable bag shape can decrease apple dropping in strong wind by decreasing the drag force.
- Taxon
- appleMalus domesticae5
- Treatment
- suitable shape of bage5
- Outcome
- dropping apple due to strong winde5
- Direction
- decreasee5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“Thus, the dropping apple due to strong wind can decrease with the suitable shape of bag to decrease the drag force”