Modify SRS to replace D/L by R (aspect ratio)

smiths · Apr 20, 2018 · f68dc8e · f68dc8e
1 parent eb50f2f
commit f68dc8e
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Showing 2 changed files with 9 additions and 8 deletions.
diff --git a/SRS/PCM_SRS.pdf b/SRS/PCM_SRS.pdf
diff --git a/SRS/PCM_SRS.tex b/SRS/PCM_SRS.tex
@@ -154,9 +154,6 @@ \subsection{Table of Symbols}
  $A_P$ & \si[per-mode=symbol] {\square\metre} & phase change material surface
  area
  \\ 
- $A_R$ & unitless & Aspect ratio (ratio of tank diameter ($D$) to tank length
- ($L$) %CHANGE
- \\ 
  $C$ & \si[per-mode=symbol] {\joule\per \kilogram\per \celsius} &
  specific heat capacity
  \\
@@ -233,6 +230,9 @@ \subsection{Table of Symbols}
  \\
  $Q_P$ & \si[per-mode=symbol] {\joule} & latent heat energy added to PCM
  \\
+ $R$ & unitless & Aspect ratio (ratio of tank diameter ($D$) to tank length
+ ($L$) %CHANGE
+ \\ 
  $S$ & \si[per-mode=symbol] {unitless} & surface
  \\
  $t$ & \si[per-mode=symbol] {\second} & time
@@ -1454,8 +1454,9 @@ \subsubsection{Data Constraints} \label{sec_DataConstraints}
  \midrule 
  $L$ & $L > 0$ & $L_{\text{min}} \leq L \leq L_{\text{max}}$ & 1.5 \si[per-mode=symbol] {\metre} & 10\%
  \\
- $D$ & $D > 0$ & ${\frac{D}{L}}_\text{min} \leq \frac{D}{L} \leq {\frac{D}{L}}_\text{max}$ 
- & 0.412 \si[per-mode=symbol] {\metre} & 10\%
+ $D$ & $D > 0$ & $R_\text{min} \leq R \leq R_\text{max}$ where $R = \frac{D}{L}$ 
+ & 0.412 \si[per-mode=symbol] {\metre} & 10\% %CHANGE to introduce aspect
+ %ratio R
  \\
  $V_P$ & $V_P > 0$ (*) & $ V_P \geq \text{minfract} \cdot V_{\text{tank}}(D, L) $ &
  0.05 \si[per-mode=symbol] {\cubic\metre} & 10\%
@@ -1530,8 +1531,8 @@ \subsubsection{Data Constraints} \label{sec_DataConstraints}
  \midrule 
  $L_\text{min}$ & 0.1 \si{\metre}\\
  $L_\text{max}$ & 50 \si{\metre}\\
- ${\frac{D}{L}}_\text{min}$ & 0.002 \\
- ${\frac{D}{L}}_\text{max}$ & 200 \\
+ $R_\text{min}$ & 0.002 \\ % CHANGE for R
+ $R_\text{max}$ & 200 \\ % CHANGE for R
  $\text{minfrac} $ & $10^{-6}$\\
  $h_\text{min}$ & 0.001 \si{\metre}\\
  $\rho_P^{\text{min}}$ & 500 \si{\kilo\gram\per\cubic\metre}\\
@@ -1590,7 +1591,7 @@ \subsubsection{Properties of a Correct Solution} \label{sec_CorrectSolution}
 
 \noindent
 In addition, the energy change in the PCM should equal the energy input to 
-the PCM from the water. This can be expressed as
+the PCM from the water.  This can be expressed as
 
 \begin{equation}
 E_{P} = \int_{0}^{t} h_{P} A_{P} (T_{W}(t) - T_{P}(t)) dt. \label{eq:PCMBal}