form7.frm

计算水力水的管流

VERSION 5.00
Begin VB.Form Form7 
   Caption         =   "计算渠道水深(1-2)"
   ClientHeight    =   5595
   ClientLeft      =   60
   ClientTop       =   420
   ClientWidth     =   7110
   LinkTopic       =   "Form7"
   ScaleHeight     =   5595
   ScaleWidth      =   7110
   StartUpPosition =   3  '窗口缺省
   Begin VB.CommandButton Command3 
      Caption         =   "清除"
      Height          =   615
      Left            =   2640
      TabIndex        =   15
      Top             =   4560
      Width           =   1695
   End
   Begin VB.CommandButton Command2 
      Caption         =   "退出"
      Height          =   615
      Left            =   4800
      TabIndex        =   13
      Top             =   4560
      Width           =   1815
   End
   Begin VB.CommandButton Command1 
      Caption         =   "计算"
      Height          =   615
      Left            =   480
      TabIndex        =   12
      Top             =   4560
      Width           =   1695
   End
   Begin VB.TextBox Text6 
      Height          =   495
      Left            =   2280
      TabIndex        =   5
      Top             =   3000
      Width           =   2175
   End
   Begin VB.TextBox Text5 
      Height          =   495
      Left            =   1080
      TabIndex        =   4
      Top             =   2040
      Width           =   1455
   End
   Begin VB.TextBox Text4 
      Height          =   495
      Left            =   4800
      TabIndex        =   3
      Top             =   2040
      Width           =   1695
   End
   Begin VB.TextBox Text3 
      Height          =   495
      Left            =   1080
      TabIndex        =   2
      Top             =   1080
      Width           =   1455
   End
   Begin VB.TextBox Text2 
      Height          =   495
      Left            =   4800
      TabIndex        =   1
      Top             =   240
      Width           =   1695
   End
   Begin VB.TextBox Text1 
      Height          =   495
      Left            =   1080
      TabIndex        =   0
      Top             =   240
      Width           =   1455
   End
   Begin VB.Label Label7 
      Height          =   495
      Left            =   240
      TabIndex        =   14
      Top             =   3720
      Width           =   6375
   End
   Begin VB.Label Label6 
      Caption         =   "水深 h"
      Height          =   495
      Left            =   1680
      TabIndex        =   11
      Top             =   3000
      Width           =   495
   End
   Begin VB.Label Label5 
      Caption         =   "底坡i"
      Height          =   495
      Left            =   600
      TabIndex        =   10
      Top             =   2040
      Width           =   495
   End
   Begin VB.Label Label4 
      Caption         =   "流量Q"
      Height          =   495
      Left            =   4200
      TabIndex        =   9
      Top             =   2040
      Width           =   615
   End
   Begin VB.Label Label3 
      Caption         =   "底宽B"
      Height          =   495
      Left            =   600
      TabIndex        =   8
      Top             =   1080
      Width           =   735
   End
   Begin VB.Label Label2 
      Caption         =   "糙率N"
      Height          =   495
      Left            =   4200
      TabIndex        =   7
      Top             =   240
      Width           =   615
   End
   Begin VB.Label Label1 
      Caption         =   " 边坡系数M"
      Height          =   495
      Left            =   120
      TabIndex        =   6
      Top             =   240
      Width           =   975
   End
End
Attribute VB_Name = "Form7"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Private Sub Command1_Click()
Dim b As Single, m As Single, h1 As Single, i As Single, n As Single, q1 As Single, q2 As Single
  m = Val(Text1.Text)
  n = Val(Text2.Text)
  b = Val(Text3.Text)
  q1 = Val(Text4.Text)
  i = Val(Text5.Text)
  If m > 0 And n > 0 And b > 0 And q1 > 0 And i <> 0 Then
  
  Do While (q2 - q1) / q1 < 0.0001
  h1 = h1 + 0.00001
  q2 = (b + m * h1) * h1 * (1 / n) * (((b + m * h1) * h1) / (b + 2 * h1 * ((1 + m ^ 2) ^ (1 / 2)))) ^ (2 / 3) * (i ^ (1 / 2))
  Loop
  Text6.Text = Str(h1)
  Else
  Label7.Caption = "请输入除H外所有的数据"
End If

End Sub

Private Sub Command2_Click()
Form6.Show
Form7.Hide

End Sub

Private Sub Command3_Click()
Text1.Text = ""
 Text2.Text = ""
 Text3.Text = ""
 Text4.Text = ""
 Text5.Text = ""
 Text6.Text = ""

 
 Label7.Caption = ""
 Text1.SetFocus
End Sub