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问题描述:
一杯沸水冷却，圆柱体模型，底面半径0.05m，高0.1m，周围温度20度，初始水温100度
方程是四维输运方程（常数a^2=k/(c*...
问题描述:
一杯沸水冷却，圆柱体模型，底面半径0.05m，高0.1m，周围温度20度，初始水温100度
方程是四维输运方程（常数a^2=k/(c*p)，k是热传导系数0.6006焦/（米*秒*度））
初始条件：t=0时水等于100度
边界条件：1.上下壁都是自由冷却，第三类边界条件，周围温度保持在20度（H=k/h,h取1）
2.杯壁绝热，第二类边界条件
图形显示格式,取过圆柱轴的截面温度变化将其做成动画.
-Problem description : a cup of boiling water cooling cylinder model, the bottom radius of 0.05m, 0.1m high. temperature around 20 degrees, initial temperature of 100 degrees equation is four-dimensional equations (a constant ^ 2 = k/(c* p), k is the thermal conductivity coefficient of 0.6006 Coke/(m** seconds degrees)) initial conditions : t = 0 to 100 degree water boundary conditions : 1. upper and lower walls are free cooling, the third boundary conditions, maintain the temperature around 20 degrees (H = k/h, h for 1) 2. Beibi insulation, The second category boundary conditions graphics format, cylindrical shaft for the cross section of its temperature changes caused animation.
- 2022-05-12 17:55:03下载
- 积分：1
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这是一个紧凑的卫星跟踪程序。使用它甚至一个旧的电脑（从48…
This is a compact satellite tracking program. Using it even an older PC (from 486 up, DOS, VGA) can serve to track a satellite and turn the antenna, which allows newer PCs to be used for other purposes. For example other software can be used in parallel to get more information on multiple satellites or contact ranges.
It has the following functions needed in satellite communications:
Tells in which direction the satellite is.
Prints the azimuth and elevation angle numbers to the parallel port for automatic tracking (8 bit parallel data).
Gives pulses to two LPT pins for automatic doppler correction (up / down). -This is a compact satellite tracking program. Using it even an older PC (from 486 up, DOS, VGA) can serve to track a satellite and turn the antenna, which allows newer PCs to be used for other purposes. For example other software can be used in parallel to get more information on multiple satellites or contact ranges.
It has the following functions neede
- 2022-04-20 03:44:08下载
- 积分：1
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有趣的ASP编程哦,希望和大家一起分享,挺好玩的哦
有趣的ASP编程哦,希望和大家一起分享,挺好玩的哦-interesting ASP Programming Oh, and hopes to share with everyone, is very good, with the oh
- 2023-01-16 09:15:04下载
- 积分：1
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一个仿真代码，希望能给大家帮助，我认为这个定位…
toa代码仿真，希望能给大家带来帮助，本人觉得对做定位很有用-toa simulation code, I hope we can help, I do think that the positioning of the useful
- 2022-06-13 16:57:24下载
- 积分：1
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犯错
IEC60870-5-101为两个具有永久连接电路的主站与子站间传输基本远动信息提供了一套通信协议集。
在某些应用中，可能需要在通过数据网络连接的远动站之间传输相同类型的应用报文，这个数据网络上含有中继站，可以存储与转发报文，并在远动站之间提供虚电路。这种网络的传输延时取决于网络负载。
一般而言，不确定的延时意味着在远动站之间没办法采用定义在IEC60870-5-101中的数据链路层。但是，在某些情况下，还是可以使具有IEC60870-5-101全部3层的远动站，以适应采用包装配与拆卸类型站的数据网络，实现平衡通信的访问。
对于其他所有情况，本标准不采用IEC60870-5-101的链路功能，但通过一套合适的传输文件集，可用来提供平衡式存取
-err
- 2022-02-06 08:31:04下载
- 积分：1
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这是将波动方程分解为上行波下行波的源程序 把两个源代码放在一起，运行即可了！...
这是将波动方程分解为上行波下行波的源程序 把两个源代码放在一起，运行即可了！-This is the wave equation will be decomposed into up-going wave downlink wave source source code of the two together, you can run the!
- 2022-11-15 13:25:03下载
- 积分：1
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This is a Gaussian elimination of the solution equation c language. For multiple...
这是一个高斯消元发解方程的c语言实现。对于接多元方程非常的方便-This is a Gaussian elimination of the solution equation c language. For multiple access very convenient equation
- 2022-02-02 13:19:39下载
- 积分：1
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利特尔CMS在网站的数据库设计
litle cms for web site design in the database
using php,mysql
- 2022-04-22 01:55:00下载
- 积分：1
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这是一个加油站管理系统
这是一个加油站管理系统-This is a gas station management system
- 2022-04-30 13:04:24下载
- 积分：1
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数字秒表具有正及时倒计时功能包括一些设计要求和原资料
数字秒表具有正及时倒计时功能包括一些设计要求和原资料-timer
- 2022-03-04 05:20:42下载
- 积分：1
