绗?/p>
涓?/p>
绔?/p>
娴?/p>
浣?/p>
鐨?/p>
杩?/p>
鍔?/p>
涔犻瑙ｇ瓟
1
锛庡簲鐢ㄨ繛缁�ф柟绋嬬殑鏉′欢鏄粈涔堬紵
绛旓細涓嶅彲鍘嬬缉鐨勬祦浣撲綔瀹氬父娴佸姩銆?/p>
2
锛庡湪鎺ㄥ浼姫鍒╂柟绋嬬殑杩囩▼涓紝鐢ㄨ繃鍝簺鏉′欢锛熶集鍔埄鏂圭▼鐨勭墿鐞嗘剰涔夋槸浠�
涔堬紵
绛旓細鍦ㄦ帹瀵间集鍔埄鏂圭▼鐨勮繃绋嬩腑锛岀敤杩囨潯浠舵槸涓嶅彲鍘嬬缉銆佹棤鍐呮懇鎿﹀姏鐨勬祦浣擄紙鍗?/p>
鐞嗘兂娴佷綋锛変綔瀹氬父娴佸姩銆傛柟绋嬬殑鐗╃悊鎰忎箟鏄悊鎯虫祦浣撲綔瀹氬父娴佸姩鏃讹紝鍚屼竴娴佺鐨勪笉
鍚屾埅闈㈠锛屽崟浣嶄綋绉祦浣撶殑鍔ㄨ兘銆佸娍鑳戒笌璇ュ鍘嬪己涔嬪拰閮芥槸鐩哥瓑鐨勩�?/p>
3
锛庝袱鏉℃湪鑸规湞鍚屼竴鏂瑰悜骞惰繘鏃讹紝浼氬郊姝ら潬鎷㈢敋鑷冲鑷磋埞浣撶浉鎾炪�傝瘯瑙ｉ噴浜х敓杩?/p>
涓�鐜拌薄鐨勫師鍥犮�?/p>
绛旓細鍥犱负褰撲袱鏉℃湪鑸规湞鍚屼竴鏂瑰悜骞惰繘鏃讹紝涓よ埞涔嬮棿姘寸殑娴侀�熷鍔狅紝鏍规嵁浼姫鍒?/p>
鏂圭▼鍙煡锛屽畠浠棿鐨勫帇寮轰細鍑忓皬锛屾瘡涓�鏉¤埞鍙楀埌澶栦晶姘寸殑鍘嬪姏澶э紝鍥犳涓よ埞浼氬郊姝?/p>
闈犳嫝鐢氳嚦瀵艰嚧鑸逛綋鐩告挒銆?/p>
4
锛庡喎鍗村櫒鐢?/p>
19
鏍?/p>
桅
20
脳
2mm
锛?/p>
鍗崇鐨勫鐩村緞涓?/p>
20mm
锛屽鍘氫负
2mm
锛?/p>
鐨勫垪绠＄粍鎴愶紝
鍐峰嵈姘寸敱
桅
54
脳
2mm
鐨勫绠℃祦鍏ュ垪绠′腑锛屽凡鐭ュ绠′腑姘寸殑娴侀�熶负
s
锛屾眰鍒楃涓按娴佺殑
閫熷害銆?/p>
瑙ｏ細宸茬煡
桅
1
20
脳
2mm
锛?/p>
d
1
=20
锛?/p>
2
脳
2=16mm
锛?/p>
n
1
=19
锛?/p>
桅
2
54
脳
2mm
锛?/p>
d
2
=54
锛?/p>
2
脳
2=50mm
锛?/p>
v
2
=s
锛屾牴鎹繛缁�ф柟绋嬬煡锛?/p>
S
0
v
0
=
S
1
v
1
+
S
2
v
2
+
鈥︹�?/p>
+
S
n
v
n
锛屽垯
72
.
0
16
19
4
.
1
50
4
1
4
1
2
2
2
1
1
2
2
2
2
1
1
2
2
2
1
1
2
2
1
飥?/p>
飩?/p>
飩?/p>
飥?/p>
飥?/p>
飦?/p>
飦?/p>
飥?/p>
飥?/p>
d
n
d
d
n
d
S
n
S
v
v
v
v
m/s
5
锛庢按绠′笂绔殑鎴潰绉负脳
10
锛?/p>
4
m
2
锛屾按鐨勬祦閫熶负
m/s
锛屾按绠′笅绔瘮涓婄浣?/p>
10m
锛?/p>
涓嬬鐨勬埅闈㈢Н涓好?/p>
10
锛?/p>
4
m
2
銆?/p>
(a)
姹傛按鍦ㄤ笅绔殑娴侀�燂紱
(b)
濡傛灉姘村湪涓婄鐨勫帇寮轰负脳
10
5
Pa
锛屾眰涓嬬鐨勫帇寮恒�?/p>
瑙ｏ細
(a)
宸茬煡
S
1
=
脳
10
锛?/p>
4
m
2
锛?/p>
v
1
= m/s
锛?/p>
h
1
=10m
锛?/p>
S
2
=
脳
10
锛?/p>
4
m
2
锛?/p>
1
p
=
脳
10
5
Pa
锛屾牴鎹繛
缁�ф柟绋嬶細
S
1
v
1
=
S
2
v
2
鐭ワ細
5
.
2
10
0
.
8
0
.
5
10
0
.
4
4
4
2
1
1
2
飥?/p>
飩?/p>
飩?/p>
飩?/p>
飥?/p>
飥?/p>
飥?/p>
飥?/p>
S
S
v
v
( m/s
锛?/p>
(b)
鏍规嵁浼姫鍒╂柟绋嬬煡锛?/p>
2
2
2
2
1
1
2
1
2
1
2
1
p
gh
p
gh
飥?/p>
飥?/p>
飥?/p>
飥?/p>
飥?/p>
飦?/p>
飦?/p>
飦?/p>
飦?/p>
v
v
锛?/p>
h
2
=0
锛?/p>
姘?/p>
飦?/p>
=
脳
10
3
kg/m
3