TS. KIỀU LÊ THỦY CHUNG
Khoa KT ĐỊA CHẤT & DẦU KHÍ
Nội dung buổi học
Hiện tượng mao dẫn
Dòng chảy 1 phương
Dòng chảy phẳng (2 phương)
Hiện tượng mao dẫn là gì?
3
Điều kiện thủy tĩnh
gzu
ww
cos2
d
r
m
0
v
F
m
c
r
T
u2
Patm
rm
T
d
hW
Patm
(căng)
uc
(-)
z
Áp lực, u
+z
-z
(+)
uw
4
gd
T
h
w
c
cos4
0cos
4
2
dTgh
d
wc
T: sức căng bề mặt
: góc tiếp xúc
d: đường kính ống mao dẫn
w: khối lượng thể tích của nước
g: gia tốc trọng trường
Chiều cao mao dẫn:
5
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