Abstract:
This study is the development of hydraulic application program, called "Computerized Hydraulic Utilities" (CHU). The program has been developed by using Visual Basic computer language and Microsoft Excel. Operating system for this program is Windows 95 or later version. The program can be divided into 2 parts, categorized by function. 1) Design part : this part can be used to calculate flowrate, velocity or geometries of hydraulic modules. Users can choose any one of those parameters as a result and then use the program to calculate by giving the rest of parameters to program. The hydraulic modules that program can calculate consist of open channels, pipes and fittings, weirs, penstocks, etc. This part also can be used to calculate the sizes of hydraulic modules for some unit processes, such as sedimentation tank, aeration tank. 2) Analysis part : this part can be used to analysis flow characteristics of whole wastewater treatment plant by representing all unit processes, such as sedimentation tank or aeration tank, with a train of hydraulic modules from headwork to discharge point of the treatment plant. The hydraulic modules that program can calculate consist of open channels, pipes and fittings, weirs, penstocks, screens, parshall flume, side weirs, etc. The program will calculate water level and flowrate through each modules and will calculate velocity in conveying modules. This part of program can also allow the users to save and open the data as database files. Results of calculation from this part will be automatically linked to Excel for editting, printing and creating hydraulic profile. CHU program can save design time for hydraulic calculation, facilitate hydraulic analysis of the plant at various situations of incoming flowrates and make the easy way for designers to design or improve their hydraulic modules to serve the entire flowrate range of the plants.