Unterschiede

Hier werden die Unterschiede zwischen zwei Versionen angezeigt.

--- en:berechnungen:kompressionsverhaeltnisse [2025/01/20 17:08] – neelest
+++ en:berechnungen:kompressionsverhaeltnisse [2025/09/04 10:44] (aktuell) – [Compression ratio] neelest
@@ Zeile 1: / Zeile 1: @@
-====== Compression ratios ======
+====== Compression ratio & Pumping ratio ======
 In REX, the following ratios are differentiated between different screw zones.
@@ Zeile 5: / Zeile 5: @@
 ===== Compression ratio =====
-The following equation applies from (REX >= 18.1 / PSI >= 16.1): \\
+In REX/PSI, compression ratios are calculated both within the respective zones (compression zone and decompression zone) as well as in the overview section under "Dimensions," where the compression ratio of the zones before and after a (de-)compression zone is displayed. \\
+The values may differ if the channel pitch, land width, channel radii, or flank angle are varied.  \\
 ==== (De)compression zones ====
@@ Zeile 14: / Zeile 14: @@
 With index 1 for the start of the zone and index 2 for the end of the zone. \\
-===== Volume compression ratio (VCR) =====
-As the ratio of the channel depths does not allow a meaningful comparison between two screw concepts, the volume compression ratio is used for a more precise description. It relates the channel cross-section of the feed zone to the channel cross-section of the metering zone. In REX, the screw clearance is also taken into account. \\
-$VCR=\frac{[(h_E+s)*(t_E-i_E*e_E)]*(D-(h_E+s))}{[(h_M+s)*(t_M-i_M*e_M)]*(D-(h_M+s))}$
-with the channel depth $h$, the side clearance $s$, the pitch $t$, the number of webs $i$, the web width $e$ and the diameter $D$. With the indices $E$ for the feed zone and $M$ for the metering zone.
 ==== Barrier zones ====
@@ Zeile 73: / Zeile 65: @@
 ===Further topics===
   * [[en:berechnungen:einfache_berechnung|]]
+  * [[en:berechnungen:prozess_iterieren]]
   * [[en:berechnungen:durchsatz|]]
   * [[en:berechnungen:druckverlauf|]]
@@ Zeile 78: / Zeile 71: @@
   * [[en:berechnungen:temperaturverlauf|]]
   * [[en:berechnungen:leistung_und_schubspannungen|]]
+  * [[en:berechnungen:schergeschwindigkeit]]
   * [[en:berechnungen:verweilzeit|]]
   * [[en:berechnungen:verweilzeitverteilung|]]