private void calcPerm()
{
double perm;
settings.timeInMinutes = timeInMinutes;
settings.timeInSeconds = timeInSeconds;
settings.netWeight = currentNetWeightString;
settings.Save();
double flow = Convert.ToDouble(currentNetWeightString) / Convert.ToDouble(timeInSeconds);
double thickness = Convert.ToDouble(settings.sampleThickness);
double viscosity = Convert.ToDouble(settings.viscosity);
double k1 = flow * thickness * viscosity * 14.7; //the 14.7 is a conversion factor, NOT atmospheric pressure! It lumps together the conversion from centipoise to poise for viscosity, the conversion from PSI to dynes/cm^2, and the conversion from cm^2 to Darcies.
double area = 3.1415926 * (Convert.ToDouble(settings.diameter) * Convert.ToDouble(settings.diameter)) / 4;
//perm = k1 / (60 * area * Convert.ToDouble(textBoxPressure.Text)); //if time were in minutes
perm = k1 / (area * (0.014 * Convert.ToDouble(settings.height))); //1m =1.4PSI => 1cm=0.014PSI
//write to last line of file
try
{
filePath = settings.dataPath;
SR = new StreamWriter(filePath, true);
/*
* SR.WriteLine("");
* SR.WriteLine("Calculated Permeability (Darcies) =\t" + perm.ToString("#.00000"));*/
SR.WriteLine("");
SR.WriteLine("Total Weight = " + currentNetWeightString + " g");
SR.WriteLine("Total Time = " + lastTimeInSeconds.ToString("#0.00") + " Secs");
//SR.WriteLine("Flow Velocity = " + (weight / (Convert.ToDouble(settings.area) * time)).ToString("#0.000") + " cm/s");
vel = (Convert.ToDouble(currentNetWeightString) / (Convert.ToDouble(settings.area) * Convert.ToDouble(lastTimeInSeconds.ToString("#0.00")))).ToString("#0.000");
SR.WriteLine("Flow Velocity = " + vel + " cm/s");
CommonClass.addVelToLast5(vel);
SR.Close();
}
catch (Exception)
{
}
}
public void SaveDataTableToFile()
{
writeHeader();
SR = new StreamWriter(filePath, true);
//option 1: first write the data from the last round
/*foreach (DataRow row in tableArray[round - 2].Rows)
* {
* SR.WriteLine("{0,10}\t{1,10}", row.Field<string>(0), row.Field<string>(1));
* lastw = row.Field<string>(1);
* lastT = row.Field<string>(0);
* }*/
//option 2: write the average data from all the rounds
int rowcount = 0;
try
{
foreach (DataRow row in tableArray[round - 2].Rows)
{
double sum = 0;
double average = 0;
for (int i = 0; i < (round - 1); i++)
{
sum = sum + Convert.ToDouble(tableArray[i].Rows[rowcount][1]);
}
average = sum / (round - 1);
rowcount++;
SR.WriteLine("{0,10}\t{1,10}", row.Field <string>(0), average.ToString("0"));
lastw = average.ToString("0");
lastT = row.Field <string>(0);
}
}
catch (Exception)
{
Debug.WriteLine("ERROR IN LOOPONG THROUGH tableArray");
}
//
SR.WriteLine("");
SR.WriteLine("***************************");
SR.WriteLine("");
//
SR.WriteLine("Total Weight = " + lastw + " g");
SR.WriteLine("Total Time = " + lastT + " Secs");
//SR.WriteLine("Flow Velocity = " + (weight / (Convert.ToDouble(settings.area) * time)).ToString("#0.000") + " cm/s");
vel = (Convert.ToDouble(lastw) / (Convert.ToDouble(settings.area) * Convert.ToDouble(lastT))).ToString("#0.000");
SR.WriteLine("Flow Velocity = " + vel + " cm/s");
SR.WriteLine("");
SR.WriteLine("***************************");
SR.WriteLine("");
CommonClass.addVelToLast5(vel);
//
if (settings.maxRepetitions > 1)
{
for (int i = 0; i < round - 1; i++)
{
SR.WriteLine("Round " + ((i + 1).ToString()));
foreach (DataRow row in tableArray[i].Rows)
{
SR.WriteLine("{0,10}\t{1,10}", row.Field <string>(0), row.Field <string>(1));
}
SR.WriteLine("");
}
SR.WriteLine("***************************");
SR.WriteLine("");
int k = 0;
foreach (DataRow row in finalWeights.Rows)
{
k++;
SR.WriteLine("{0,10}\t{1,10}", "Weight Round " + k.ToString(), row.Field <string>(0));
}
SR.WriteLine("{0,10}\t{1,10}", "Average Weight ", average.ToString("0"));
}
SR.Close();
}