Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Transient temperature calculation method for complex fluid-solid heat
  transfer problems with scattering boundary conditions   A calculation method for engine temperatures is presented. Special focus is
placed on the transient and scattering boundary conditions within the
combustion chamber, including fired and coasting conditions, as well as the
dynamic heat transfer of the water jacket. Model reduction is achieved with
dimensional analysis and the application of probability density functions,
which allows for a timescale separation. Stationary in-cylinder pressure
measurements are used as input values and, according to the transient behavior,
modified with an own part-load model. A turbocharged SI race engine is equipped
with 70 thermocouples at various positions in proximity to the combustion
chamber. Differentiating from already published works, the method deals with
the transient engine behavior during a race lap, which undergoes a frequency
range of 0.1-1 Hz. This includes engine speed build-ups under gear changes,
torque variations, or the transition from fired to coasting conditions.
Different thermal behaviors of various measuring positions can be simulated
successfully. Additionally, cylinder individual temperature effects resulting
from an unsymmetrical ignition sequence and different volumetric efficiencies
with unequal residual gas can be predicted. Up to a few percent, the energy
balance of the water jacket is fulfilled and variations of water inlet
temperatures can be simulated accurately enough.

23
The categories of this paper are: solv-int
21
The categories of this paper are: adap-org
6
The categories of this paper are: astro-ph
24
The categories of this paper are: dg-ga
35
The categories of this paper are: mtrl-th
7
The categories of this paper are: hep-th
3
The categories of this paper are: physics
22
The categories of this paper are: chao-dyn
9
The categories of this paper are: nlin
26
The categories of this paper are: bayes-an
1
The categories of this paper are: cs
31
The categories of this paper are: ao-sci
11
The categories of this paper are: hep-lat
0
The categories of this paper are: hep-ph
5
The categories of this paper are: gr-qc
16
The categories of this paper are: stat