From b035523bb2a682babae7d6c475301ee46e10c2ea Mon Sep 17 00:00:00 2001
From: Thomas Fischer <thomas.fischer@ufz.de>
Date: Wed, 23 Jan 2019 15:17:47 +0100
Subject: [PATCH] [MaL/Fluid/Viscosity] Fix derivation.
---
MaterialLib/Fluid/Viscosity/TemperatureDependentViscosity.h | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/MaterialLib/Fluid/Viscosity/TemperatureDependentViscosity.h b/MaterialLib/Fluid/Viscosity/TemperatureDependentViscosity.h
index 74fb26500db..48386f10dc0 100644
--- a/MaterialLib/Fluid/Viscosity/TemperatureDependentViscosity.h
+++ b/MaterialLib/Fluid/Viscosity/TemperatureDependentViscosity.h
@@ -70,7 +70,7 @@ public:
}
/**
- * Get the partial differential of the viscosity with respect to
+ * Get the partial differential of the viscosity with respect to
* temperature.
* \param var_vals Variable values in an array. The order of its elements
* is given in enum class PropertyVariableType.
@@ -81,7 +81,8 @@ public:
{
(void)var;
const double T = var_vals[static_cast<int>(PropertyVariableType::T)];
- return -_mu0 * std::exp(-(T - _temperature_c) / _temperature_v);
+ return -_mu0 / _temperature_v *
+ std::exp(-(T - _temperature_c) / _temperature_v);
}
private:
--
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