1 【標題】 水撃現象のパターン分類 - khk.gr.jp

1 1 Me-FL-NM051 ( ) ( ) 18 (WaterHammer) ( ) (UnsteadyState) (Transient Flow) (1) H (a/g) V H V a= g H ( ) ( ) L T 2L/a a 1200 /s L 800 2x800/1200 H (K 1) V2/2g(K ) H (a/g) V 10 1 /s 0 /s H 11x(12 02)/( ) H (1200 )x(1 0) ( )

2 2 TS 89 1 TS TS 2 FE-06-IG-003 ( ) FE-06-IG-002 3 TS ( ) or ( 1) / (1) / / ( ) 1 2 2 (2) / ( ) 4 U ( )

3 ( ) ( ) / 1 1 (a)(b) (1) (a) 2L/a (b) (c) , (c) (d) (2) (1) / T 2L/a Hu= (a/g) V Hd= (a/g) VJoukowsky T 2L/a Hu {K/2 (K K2/4) }Ho Hd {K/2 (K K2/4) }Ho H H Ho V Ve Vo K {LV /(gTHo)}2 V Vo Ve Hu ( ) Hd ( )H 1 ( ) Ho 1 ( ) Vo ( /s) Ve ( /s) T (s) L ( )( ) a ( /s) g ( /s2) H H H Ho H H 0 ( ) ( ) 5 T T ( )

4 ( 2) (1) (a) (b) (c) (a) ( ) 2 [ (2) ] (b)(c) (2) (3) ( ) [ ( ) ] [ ] ( ) ( ) ( ) ( ) 6 ( ) ( ) ( ) ( ) ( ) (3) (4) ( )

5 100 3 99 ( ) 2 1/3 Bv ( 10 ) 1 (4) ( )7 ( 3) ( (5) [ ] ( 4) (1) (6))

6 8 ( / ( ) ( ) 110 130 60 80 ( / ( ) ( ) ( 9 ( ) A1 A2 Ao,A1,A2 (7) ( ))))

7 (2) / / / 10 (a) ( dV /dt ) (b) / (8) (Slamming) Vmin Vmin ( ) (a) (b) ( ) ----- ( ) ----- ( dV /dt ) / / FE-06-IG-002 5 (9)

8 11 ( ) (10) ( ) H (a/g)Vo (a) (b) 1 (c) 12 ( ) ( ) (1) (Water Column Separation) /or ( )

9 ( ) / 6 7